* Support Kerberized HDFS

* make namenode optional

* auto get endpoint for bucket of cos, s3 in China

* add doc

* adjust unit test

* s3: try GetBucketLocation from us-east-1 and cn-north-1

* add bos and obs auto discover endpoint

* fix
Co-authored-by: Nchnliyong <liyong@juicedata.io>

* objects range to be synced include start and end

* Update sync.go

* Update qiniu.go
Co-authored-by: Nchnliyong <liyong@juicedata.io>
Co-authored-by: NDavies Liu <davies@juicedata.io>

This reverts commit f6d2acdd40fc847b826acdba3ab381de11868454.

* Fix goreleaser failure

* Fix goreleaser configuration

* Cleanup CI jobs

* Fix CI error in qiniu

* Fix TestMem failure

`Copy()` was removed in 8ed16ac368cd17dfa305f5550b741143c322f51b

* Fix TestDisk failure

* fix TestDisk
Co-authored-by: NDavies Liu <davies@juicedata.io>

* support HDFS

* fix put

* fix walk

* remove multipart for disk

* fix ending / of path

* fix endpoint for hdfs

* fmt

* fix huawei pseudo version

* update readme, checked go 1.9 - 1.13

* Fix build error when `GO111MODULES=on`

* Full matrix for go compatibility test in CI

* Setup bumpbersion

* Config goreleaser

* add benchmark subcommand

* also support 1st positional arg to pass dest dir

* fix

* fix lint

* fix

2. The bucket url (--bucket option) format is:   http://BucketName.1.2.3.4[:port]

* wait for mount point to be ready

* update tests

* Use librados to access Ceph

* build juicefs with librados

* add ceph as dep

Close #52