Incremented version to 1.3.4. (opensearch-project#359)

Signed-off-by: Zelin Hao <zelinhao@amazon.com>

add 2.1 release notes (opensearch-project#352) (opensearch-project#354)

* add 2.1 release notes

Signed-off-by: Jackie Han <jkhanjob@gmail.com>

* remove the change that's already been released in 2.0.1

Signed-off-by: Jackie Han <jkhanjob@gmail.com>
(cherry picked from commit e78cdd0)

Co-authored-by: Jackie Han <41348518+jackiehanyang@users.noreply.github.com>

Use custom plugin to publish zips to maven (opensearch-project#343) (o…

…pensearch-project#344)

Signed-off-by: Xun Zhang <xunzh@amazon.com>
(cherry picked from commit f6e8770)

Release notes for version 1.3.3 (opensearch-project#336) (opensearch-…

…project#338)

Signed-off-by: Xun Zhang <xunzh@amazon.com>
(cherry picked from commit ea62c71)

2.0 GA release notes (opensearch-project#325) (opensearch-project#326)

Signed-off-by: Xun Zhang <xunzh@amazon.com>
(cherry picked from commit 42fd67e)

bump version to 1.3.2 in CI workflow (opensearch-project#307)

Signed-off-by: Yaliang Wu <ylwu@amazon.com>

add 2.0-rc1 release notes (opensearch-project#295) (opensearch-projec…

…t#297)

Signed-off-by: Xun Zhang <xunzh@amazon.com>
(cherry picked from commit b6f6116)

uploade latest RCF jar (PR309) (opensearch-project#259) (opensearch-p…

…roject#261)

Signed-off-by: Yaliang Wu <ylwu@amazon.com>
(cherry picked from commit e4795b7)

Co-authored-by: Yaliang Wu <ylwu@amazon.com>

rename the release note file (opensearch-project#219) (opensearch-pro…

…ject#221)

Signed-off-by: Xun Zhang <xunzh@amazon.com>
(cherry picked from commit 1550512)

Co-authored-by: Xun Zhang <xunzh@amazon.com>