If grep does not find a match, it return 1 which fails the shell
script. Hence made it return true if no match is found.
Also, removed returning of error from the script becasue any failure
will cause the job to re-run which may re-renew certificates and
restart the pods again. And this can continue if the error persists.
Chaange-Id: I2a38b59789fd522e8163ff9b12ff847eb1fe2f3a
Change-Id: Ica456ef6c5bec2bd29f51aaeef7b5ce5e8681beb
ba998fc142