Motivation
The state is not production-ready.

Modifications
Remove the note about stateful function from the Deploy a cluster on bare metal document.

updated docs for releases: master ~ 2.1.0

Signed-off-by: Nxiaolong.ran <rxl@apache.org>

### Motivation

Update 2.6.1 docs

### Modifications

- update 2.6.1 docs
- add 2.6.1 sidebars.json
- update releases.json
- update versions.json

Master Issue: #7083 

### Motivation

currently, website is released in a versioned way. but each versioned directory, contains only part of md files. This is hard to maintain the content of each version.
It would be better to make each versioned directory contain all the md files.


### Modifications

* Generate full document for 2.6.1

Master Issue: #7083 

### Motivation

currently, website is released in a versioned way. but each versioned directory, contains only part of md files. This is hard to maintain the content of each version.
It would be better to make each versioned directory contain all the md files.


### Modifications

* Generate full document for 2.6.0

the website for 2.5.2 is cut from branch-2.5 and outdated with wanted code. This PR build the website based on the content of 2.5.1 to make it right.

* add versioned docs

* add new version 2.5.2

* change following guangning's comments

Motivation

Improve the language and the overall descriptive style of the Pulsar Security document (deploy-bare-metal section): http://pulsar.apache.org/docs/en/next/deploy-bare-metal/

Modifications

Adjust the tone, personal pronouns, voice also some typo errors of some sentences in the document.

Pulsar already have been supported multi host. Introduce them in Pulsar document.

[Issue 3851] [pulsar-broker] Support to start broker use the port initialized in cluster metadata (#3853)

### Motivation

Fixes #3851

### Modifications

Override the port of service urls in brokerConfig by the config initialized in cluster metadata.

Closes #3777 

### Motivation

It is better to add a consumer example in deploying a pulsar cluster for new beginners.

### Modifications

Amend a typo in pulsar-client producer example and add a consumer example.

### Motivation

Improve deployment guide on enabling tiered storage, because `offloaders` are packaged in a separated distribution binary.

### Modifications

change related doc.

### Motivation

Issue: https://github.com/apache/pulsar/issues/3213

### Modifications

update the readme to highlight this part

### Result

After your change, what will change.

*Motivation*

Sometimes, people might try out Pulsar by using one machine and expand to multiple nodes
later. The steps to deploy Pulsar to one node is same as deploying to multiple nodes.
However there are some places required attentions. This PR is to update the deployment doc
with instructions on how to deploy Pulsar to one node

* Removed mentions to incubator-pulsar

* Removed DISCLAIMER link from offloaders package

* Trigger build

* Updated documentation about changed arguments for functions, sources and sinks

* Some missing files

### Motivation

In few places in website we're displaying the literal `{{pulsar.version}}` instead of the actual Pulsar version string. The correct variable name is expected to use `:` as separator.

### Motiviation

Fixes #2329

 ### Changes

- How to enable state storage for stateful functions
- How to enable function worker
- How to install builtin connectors
- Instructions to test functions

* [website] improve pulsar connector documentation

 ### Changes

- Add documentation for each IO connector
- Add a tutorial how to run a built-in connector (end-to-end)
- How to develop a Pulsar IO connector

* Addressed review comments

### Motivation

There is a duplication in the security pages. That was introduced because security pages were relocated
when developing new site.

And a couple of includes links are not working.

 ### Changes

- Fix all the security related links and removed unneeded `docs/administration-auth.md` page
- Expanding the includes

additionally fixing some anchors when modifying the pages

### Motivation

Make images work in the docs when there is a base path. Example can be seen here.

https://cckellogg.github.io/incubator-pulsar/docs/functions-overview

### Motivation

Improve the documentation and usability of the pulsar website. This moves the website and documentation to a new framework (https://docusaurus.io/)  which will make it easier to maintain going forward.

### Modifications

A new version of the website in site2 directory. Also updates the pulsar build docker to add the new website build dependencies.

### Result

A more usable website and documentation.

A preview of the site can be seen here: https://cckellogg.github.io/incubator-pulsar
*All the links and images might not work on this site since it's a test only site*

* Issue 1288: Provide documentation for running BookKeeper auto-recovery

 ### Motivation

Fixes #1288. We mentioned auto-recovery in DCOS deployment. but we don't have any instructions to run auto-recovery in bare-mental deployment.

 ### Changes

Update the documentation in bare-mental deployment.

* Enable autorecovery for ansible

*Motivation*

Security is one of the most important features that Apache Pulsar offers.
It is making sense to have a top-level cateory to hold all the documentation related to security.

e.g.

- tls encryption and authentication
- authenz authentication
- authorization
- end-to-end encryption

*Solution*

All security documentation are now in `Security` category.

* add new doc and update topic.html include

* Begin change property/tenant language

* fix topic.html includes

* change name of explanation include

* Begin s/global Zk/configuration store changes

* fix global ZK popovers

* more overhaul for configuration store change

* begin documenting schemas in java client

* more info on async java

* add section on schemas

* fix async consumer example

* add missing byte[]s

* more YAML changes for configuration store

* use shortened topic names in CLI docs

* add images for each subscription mode

* add new image for partitioning and routing

* topic naming explanation

* add compaction-specific commands to pulsar-admin docs

* add missing pulsar-admin command

* consolidate into pulsar-admin topics command

* add note on persistent only to compact commands

* fix topic naming shorthand table

* fix issues with pulsar CLI docs

* revert file name for global_zookeeper.yaml

* remove unneeded 'prop' terminology

* note that persistent topics are the default

* remove TODO that isn't rendering properly

* remove unused YAML file

* add figure include

* add missing license header

Issue 1014: Rename "global zookeeper" to "configuration-store"(change in code, conf and cli) (#1059)

* global-zookeeper => configuration-store: change in code, conf and cli

* change following @sijie's comments

* remove un-used imports

* change following @ivan's comments

* change following comments

* fix rebase error

* change for PR #1572 and #1223, fix integration fail

* Fix cube definitions after global zookeeper is renamed to configuration-store

* Hide deprecated options and few more adjustments

* Fixed required status of global-zk argument in cluster init tool

* Limit the memory usage for processes

* Fix the aliases and limit the memory usage

* remove environment settings

* Fix time.sleep at watch-znode.py

* revert unstarted to use started yml

* Fix invalid `""`

* begin adding section on connecting to running cluster

* remove unnecessary bash comment