[COMMON] Add limits to postgres deployments.

Having limits is important in order to have safe deployment.
postgres didn't had one so let's add them.

Issue-ID: OOM-2230
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I279e01b6be6cddab1f792c75026b41dca5c6c694
2 files changed