meta-phosphor: systemd-policy: move to systemd

Don't install systemd policy if:
 - systemd is not being installed
 - a non phosphor distro

Use RRECOMMENDS for easy opt-out in Phosphor based distros.

Change-Id: Icabde199863f351d1bcc04eb1a80e974324a4488
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/recipes-core/systemd/systemd_%.bbappend b/recipes-core/systemd/systemd_%.bbappend
index 1aabe37..f1046de 100644
--- a/recipes-core/systemd/systemd_%.bbappend
+++ b/recipes-core/systemd/systemd_%.bbappend
@@ -25,3 +25,5 @@
 ALTERNATIVE_TARGET[init] = "${rootlibexecdir}/systemd/systemd"
 ALTERNATIVE_LINK_NAME[init] = "${base_sbindir}/init"
 ALTERNATIVE_PRIORITY[init] ?= "300"
+
+RRECOMMENDS_${PN}_append_openbmc-phosphor = " phosphor-systemd-policy"