Fix: Adapt release script for -e mode

Fix: Adapt release script for -e mode

Testing did not reveal a flaw in the original code due to a lack of
the "-e" bash mode. With that enabled, the script fails if the
command isn't part of a conditional, or otherwise handled. In this
case, we use a bash OR to assign the non-zero exit code if the
command fails.

Change-Id: I474afec6ca711875cd7937088018d7bbf08d37f3
Signed-off-by: Eric Ball <eball@linuxfoundation.org>