Those reports may be helpful when debugging neutron gate issues.
pgrep is backwards compatible with old Solaris tools, which means it
does not match with commands that are longer than 15 characters. To
avoid that for neutron agent names which are longer than that, we need
to pass -f argument to match against the full cmdline.
Also killall instead of kill + pgrep in a subshell.
Change-Id: I9b3801e927c0e80443ed76e38cd8e3618e888e49
ef219bfcaf