fix: update logic for determining network-operator base branch for va…

[rollandf]

…lues update PR; and misc. corrections

backport of #45

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

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

[coveralls]

Pull Request Test Coverage Report for Build 13482726675

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.01%) to 47.896%

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Totals
Change from base Build 13453342782:	0.01%
Covered Lines:	7262
Relevant Lines:	15162

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💛 - Coveralls