Fix systemctl command (#1478247)

When multiple units are passed to systemctl and one fails it doesn't
finish the others. Change the template command to call systemctl for
each unit individually.

This also removes the lvm2-activation-generator in runtime-cleanup.tmpl

Resolves: rhbz#1478247

share/runtime-postinstall.tmpl

@@ -43,6 +43,9 @@ systemctl mask rhel-configure.service rhel-loadmodules.service \
                rhel-wait-storage.service media.mount \
                systemd-tmpfiles-clean.service systemd-tmpfiles-clean.timer
 
+## remove because it cannot be disabled
+remove usr/lib/systemd/system-generators/lvm2-activation-generator
+
 ## Make logind activate anaconda-shell@.service on switch to empty VT
 symlink anaconda-shell@.service lib/systemd/system/autovt@.service
 replace "#ReserveVT=6" "ReserveVT=2" etc/systemd/logind.conf

src/pylorax/ltmpl.py

@@ -642,11 +642,13 @@ class LoraxTemplateRunner(object):
             logger.debug("systemctl: no units given for %s, ignoring", cmd)
             return
         self.mkdir("/run/systemd/system") # XXX workaround for systemctl bug
-        systemctl = ('systemctl', '--root', self.outroot, '--no-reload',
-                     '--quiet', cmd)
+        systemctl = ['systemctl', '--root', self.outroot, '--no-reload',
+                     cmd]
+        # When a unit doesn't exist systemd aborts the command. Run them one at a time.
         # XXX for some reason 'systemctl enable/disable' always returns 1
-        try:
-            cmd = systemctl + units
-            runcmd(cmd)
-        except CalledProcessError:
-            pass
+        for unit in units:
+            try:
+                cmd = systemctl + [unit]
+                runcmd(cmd)
+            except CalledProcessError:
+                pass