Builder Pods should run with jenkins SA rather than default SA

[clemensutschig]

@michaelsauter - I think we should have jenkins SA used both for running jenkins master and builders - to tighten the role bindings .. which is on my list for a year+ now :)

Originally posted by @clemensutschig in opendevstack/ods-project-quickstarters#112 (comment)

[michaelsauter]

I can confirm that using jenkins as the service account still works. I am going to remove the default rolebindings today to also check that nothing breaks then ...

[clemensutschig]

Cool - now we need to try remove the rolebinding in the cd Project to see if the pull works and also in the *Test and *Dev Project to see if the update of the bc works

[clemensutschig]

@michaelsauter - status?

[michaelsauter]

*dev and *test did not have the default SA in our case. For over a week or so we also don't have it in our *cd projects and things still work. So I think we can go ahead with this one.