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/dbus/xyz.openbmc_project.ObjectMapper.service b/src/dbus/xyz.openbmc_project.ObjectMapper.service
new file mode 100644
index 0000000..9636606
--- /dev/null
+++ b/src/dbus/xyz.openbmc_project.ObjectMapper.service
@@ -0,0 +1,5 @@
+[D-BUS Service]
+Name=xyz.openbmc_project.ObjectMapper
+Exec=/bin/false
+User=root
+SystemdService=dbus-xyz.openbmc_project.ObjectMapper.service