[release][TSC] stable/chlorine branch cut, master moved to next (argon)

Anil Belur

Hello Everyone,

The new branch "stable/chlorine" has been cut. The version bump for "stable/chlorine" is complete and the master branch is moved to the next release (argon). The branches "stable/chlorine" and 
master (argon) is unlocked and open for development.

Please review the below CR which updates the jobs config Jenkins/CI with the new branches for "stable/chlorine" and the master is moved to next (Ar).

Note: A reminder for projects should rebase their existing master branch patches to ensure they are building against the post-version bumped versions of the code base.

Anil Belur