Expose prometheus creds from Makefile `showenv` target
Expose prometheus creds from Makefile `showenv` target

An operator needs to know how to access prometheus' 3x UIs - this exposes those
creds from the state bucket.

alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf,alphagov/paas-cf