When upgrading from an older deployment without the lxc-dnsmaq service
unit it's possible for the lxc-dnsmasq process to have been left in
a defunct state; this is especially true when upgrading as the
background process will have been started as a post-up command within the
lxcbr0 interface configuration. If the service is in a defunct state, or
running without a valid pid file, the systemd service unit will fail to
start.
This change ensures systemd will clean up all processes owned by the
lxc-dnsmaq user with a limited scope of processes matching a regex of
"^dnsmasq" which is only effectuve when the service is not managed by
systemd and in a defunct state.
Change-Id: If183f0b6dfbe0646384cf3bb3b89bc3901643c1e
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>
69ab10bee5