* Switch to use the ngcp-pushd.socket instead of .service, as the later
gets triggered by the formed when that is activated.
* Mark the .socket unit as enabled only when not using a process_handler,
as otherwise it will be managed by the HA system and be disabled.
Change-Id: I4a07410fe1c9dc17edde3e10921959a170556e1e
(cherry picked from commit 9cd6b39517)
(cherry picked from commit 1a1033f42f)