Issue:
Older centos linux distros don't return all pids when simple 'ps' is
called and as a result gerrit's PID is not listed and cannot be found
by the following 'grep'. It result in the situation when gerrit.sh is
not properly handling start/stop commands.
Solution:
Add 'ax' parameter so that 'ps' returns all pids. It was successfully
tested with centos and alpine 3.9.4 e.g.:
bash-4.4# echo "$PID"
62
bash-4.4# ps ax -o pid | grep -w $PID
62
Change-Id: I43596f0449f0d357dc640e582381210b61e4ca2d
Signed-off-by: Jacek Centkowski <jcentkowski@collab.net>
292815cf05