fix: update logic for determining network-operator base branch for values update PR

[maze88]

pseudo logic:

if github.ref_type == 'branch' or github.ref_name.contains('beta'):   # branch commits and beta tags update values on network-operator's *master* branch
  BASE_BRANCH = 'master'
else:   # GA and `-rc.` tags update values on network-operator's respective *release* branches
  BASE_BRANCH = release_branch

additional changes:

• e[val] is the default behavior of yq, no need to set it.
• spacing for readability.
• tee -a sets GITHUB_ENV variables while also printing them to log for clarity.

[github-actions]

Thanks for your PR,
To run vendors CIs, Maintainers can use one of:

• /test-all: To run all tests for all vendors.
• /test-e2e-all: To run all E2E tests for all vendors.
• /test-e2e-nvidia-all: To run all E2E tests for NVIDIA vendor.

To skip the vendors CIs, Maintainers can use one of:

• /skip-all: To skip all tests for all vendors.
• /skip-e2e-all: To skip all E2E tests for all vendors.
• /skip-e2e-nvidia-all: To skip all E2E tests for NVIDIA vendor.
  Best regards.

[coveralls]

Pull Request Test Coverage Report for Build 12784045004

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.007%) to 47.397%

---

Files with Coverage Reduction	New Missed Lines	%
controllers/drain_controller_helper.go	1	63.59%

Totals
Change from base Build 12764686200:	-0.007%
Covered Lines:	7266
Relevant Lines:	15330

---

💛 - Coveralls

[rollandf]

Not related to this PR, but we should delete the whole dir and then copy. This is needed in case a file has been deleted from the source.

[tobiasgiese]

We could also use rsync --delete to see all the files that are copied and deleted

[rollandf]

LGTM

[e0ne]

LGTM