libvirt: kill update-rc.d when not using sysvinit

* Fixes a dependency on a nonexistent initscripts-functions package.

Signed-off-by: Noor Ahsan <noor_ahsan@mentor.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

recipes-extended/libvirt/libvirt_1.2.17.bb

@@ -239,3 +239,8 @@ pkg_postinst_libvirt() {
                 /etc/init.d/populate-volatile.sh update
         fi
 }
+
+python () {
+    if not bb.utils.contains('DISTRO_FEATURES', 'sysvinit', True, False, d):
+        d.setVar("INHIBIT_UPDATERCD_BBCLASS", "1")
+}