Release automatically

[vanyarock01]

Releases are now hand-made. This is bad...

The release is done like this:

• Build tarantool-operator docker image (command available in Makefile) and push it to the docker hub.
• Make a commit with updated version of charts and changelog to master (remember the commit hash).
• Pack charts to .cr-release-packages:

  $ mkdir -p .cr-release-packages
  $ helm package ci/helm-chart/ && mv tarantool-operator-X.Y.Z.tgz .cr-release-packages/
  $ helm package examples/kv/ && mv cartridge-X.Y.Z.tgz .cr-release-packages/

• Use chart-releaser for make release on commit.

  $ cr upload -c <TARGET_COMMIT_HASH> -r tarantool-operator -o tarantool -t <ACCESS_TOKEN>

• Checkout to branch gh-pages
• Update helm repo index (check the correctness of the diff):

  $ mkdir -p .cr-index/ && cr index -c https://tarantool.github.io/tarantool-operator -r tarantool-operator -o tarantool
  $ diff .cr-index/index.yaml index.yaml
  $ mv .cr-index/index.yaml .
  $ git add index.yaml && git commit ...

It is necessary to automate.