* Fixed C++ batch acks tracker to evict message from sendList array

* Fixed formatting

* adding memory padding to memory limits set in kubernetes

* cleaning up

* fix: add retry and wait for kubernetes creation/deletion

* cleaning up

* adding retry logic for cleaning up subscriptions

* adjust number of retries

* correcting namespace

### Motivation

Fixes the Apache RAT check to exclude the auto-generated files from Avro compiler and Avro JSON schema definitions.

### Motivation

Building Python wheels is failing in the updated Docker image for Python 3.4, 3.5 and 3.6. Fixing it here by explicitly including the library defined variables.

### Motivation

Fixed flaky test in `AuthPluginTest.testTlsDetectPulsarSslWithHostNameValidation`. The failure 
was due to the fact that test is creating a producer asynchronously but not waiting for the 
future to be completed. 

* If no clusters are specified, the namespace should by default use current cluster

* Don't apply to v1 local namespaces

* It's better to use the isV2() check instead of isGlobal()

[pulsar-broker] provide option to disable redelivery-tracker to reduce in memory positionImpl footprint and gc improvement (#3584)

* [pulsar-broker] provide option to disable redelivery-tracker to reduce in memory positionImpl footprint and gc improvement

* change config name

[Issue 3458: Tag Pulsar ledgers in order to distinguish from other leggers in the same Bookkeeper cluster (#3525)

Fixes #3458

### Motivation

See #3458 

### Modifications

Add a new LedgerMetadataUtils class which holds the logic for building "metadata" to be attached to 

### Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

* [go client] add SubscriptionInitPos option in ConsumerOptions
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

* add comment for SubscriptionInitPos option
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

Signed-off-by: NVinceShieh <vinceshieh@gmail.com>

* [go client] add validation hostName for ClientOptions
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

* [go client] add validation hostName for ClientOptions
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

* rename ValidationHostName to TLSValidateHostname
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

### Motivation

Provides a builtin MongoDB Connector, in order to ease the storage of JSON formated message in MongoDB. It's a sink connector.


### Modifications

Add a new sub-module in the `pulsar-io`module.

### Verifying this change

This change added tests and can be verified as follows:
* deploy the connector with configuration file containing the following fields:
```
configs:
  mongoUri: mongodb://hostname:port
  database: pulsar
  collection: messages
```
* start a mongodb instance
* send messages in the topic declared when deploying the connector
* check in MongoDB if the messages have been stored in the collection `messages`

* moved all windowing related code into its own submodule.

* added pom

* [cpp-client] add multi topic for consumer #3494
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

* use initial_position instead to multi-topics
Signed-off-by: Nxiaolong.ran <ranxiaolong716@gmail.com>

* Added docs for using schema in Python client lib

* Added info on required fields

### Motivation
Add a unit test for KafkaAbstractSink to check valid configs.

### Modifications
Add KafkaAbstractSinkTest.

*Motivation*

Add state support in python functions

*Changes*

- Bump bookkeeper version, so the table service has the changes to support python functions
- Add state to python function

*Motivation*

This change was part of #2714. Moving it out as a separate change to make reviews easier.

*Changes*

Bump bookkeeper version to 4.9.0

* [pulsar-broker][replicator] add remote cluster name in producer name

* add padding between remote and local cluster-names

* broker-producer can parse remote-cluster name in producer-name

*Motivation*

There are a few shaded modules introduced when functions was introduced.
They are not needed anymore. We should remove them.

*Modifications*

Remote those unused modules.

* Create SSL context in constructor of ChannelInitializer

* Set TLS ports only in tests that need to enable TLS

### Motivation

Remove compile and link dependency on JsonCPP. Instead use boost::property_tree with JSON parser. This will not require a link time dependency.

*Motivation*

Sometimes users would like to only execute a set of test suite in command line.

*Modifications*

Make the suite file name configurable in the pom file.
So people can run a specific test suite using
```
mvn -pl tests/integration -DredirectTestOutputToFile=false -DintegrationTestSuiteFile=pulsar-thread-suite.xml clean test -PintegrationTests
```

Also categorize the tests info a few test suites. This would allow us break down
the integration test job into multiple smaller test jobs.