mapper: install systemd unit, dbus conf files

The same systemd and dbus unit/configuration files can work for everyone
now, so ship them.  Enable dbus activation, add unit file templates, and
move mapperx to libexec where it belongs.

Change-Id: Ieb021889605767ffdb9d72faad5f5b856312b935
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/src/systemd/xyz.openbmc_project.ObjectMapper.service.in b/src/systemd/xyz.openbmc_project.ObjectMapper.service.in
new file mode 100644
index 0000000..c14ba64
--- /dev/null
+++ b/src/systemd/xyz.openbmc_project.ObjectMapper.service.in
@@ -0,0 +1,14 @@
+[Unit]
+Description=Phosphor DBus Service Discovery Manager
+
+[Service]
+Restart=always
+Type=dbus
+ExecStart=@LIBEXECDIR@/phosphor-objmgr/mapperx
+BusName=xyz.openbmc_project.ObjectMapper
+TimeoutStartSec=300
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+Alias=dbus-xyz.openbmc_project.ObjectMapper.service