Enhance scripts and Makefile targets for RC and LTS release support

[yash-zededa]

In accordance with the testing team's requirement to create a release candidate (RC) before releasing the LTS version of EVE for certification(i.e release approved by the testing team).

These scripts automate the creation of RC and LTS releases by calculating the version number based on the latest tag and incrementing it accordingly.

We have removed the old patch make targets and added two new ones: rc-release and lts-release.

The rc-release command triggers a shell script that generates an rc tag based on the latest tag available for the branch.

For example:

• If the latest tag for branch 13.4 is 13.4.0, running the make rc-release command will create a release candidate (RC) tag:

  Creating RC release: '13.4.0-rc1'
  Tagged new version: 13.4.0-rc1. Please push the tag to the remote repository:
  git push origin 13.4.0-rc1
  

Once the testing team approves the release, we will create the corresponding LTS release, e.g., 13.4.0-lts.

Note: Since this is the first release from the branch, the LTS version will start at 0. For subsequent releases, the version number will increment accordingly:

• 13.4.0-rc1 → 13.4.0-rcn → TEST_TEAM (Green) → 13.4.0-lts
• 13.4.0-lts → 13.4.1-rc1 → 13.4.1-rcn → TEST_TEAM (Green) → 13.4.1-lts

The make lts-release command will take the latest rc tag and create an LTS release.

For example:

• If the last RC tag for the 13.4-stable branch is 13.4.1-rc3, the LTS tag would be 13.4.1-lts.

O/P's:

bash-3.2$ make rc-release
Creating RC release: '13.4.0-rc1'
Tagged new version: 13.4.0-rc1. Please push the tag to the remote repository
git push origin 13.4.0-rc1

bash-3.2$ make rc-release
Creating RC release: '13.4.0-rc2'
Tagged new version: 13.4.0-rc2. Please push the tag to the remote repository
git push origin 13.4.0-rc2

bash-3.2$ make lts-release
Creating the first LTS release: 13.4.0-lts
Tagged new version: 13.4.0-lts. Please push the tag to the remote repository
git push origin 13.4.0-lts

I have made every effort to cover all relevant use cases. However, if anything has been overlooked or is missing, please feel free to let me know :)

[eriknordmark]

LGTM