Add GoB repo cloning mechanism

[gunjanj007]

Description

Changes:

Clone from GoB repo instead of GitHub for getting recipes by using git_cookie_authdaemon and using https googlesource link to copy.
General cleanup/refactor

Tests

Ran the test, it successfully deployed the cluster.

Instruction and/or command lines to reproduce your tests: trigger DAG

List links for your tests (use go/shortn-gen for any internal link): http://shortn/_iRgQ5rTdM8

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• I have performed a self-review of my code.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have run one-shot tests and provided workload links above if applicable.
• I have made or will make corresponding changes to the doc if needed.

[polydier1]

looks good, please address minor comments and then you can merge