[Proposal] POEM: Providing action limits for each namespace (#5236)
[Proposal] POEM: Providing action limits for each namespace (#5236)

* Add POEM (Providing action limits for each namespace)

* Apply suggestions from code review

Co-authored-by: rodric rabbah <c16f0e086c360675d30e6890e56caa67b5448ac1@gmail.com>

* Update POEM-3-action-limit-for-namespace.md

Co-authored-by: rodric rabbah <c16f0e086c360675d30e6890e56caa67b5448ac1@gmail.com>
style95/openwhisk,style95/openwhisk,style95/openwhisk,style95/openwhisk,style95/openwhisk,style95/openwhisk,style95/openwhisk