anaconda: fix post-install scripts, regenerate initramfs

InstallClass.postAction isn't called from anywhere, move things to
anaconda post-scripts. Add regenerate of initramfs image to include
qubes-pciback module.

anaconda/data/post-scripts/50-qubes.ks

@@ -0,0 +1,9 @@
+%post
+
+rpm --import /etc/pki/rpm-gpg/*
+for initrd in /boot/initramfs-*.img; do
+   version=`basename $initrd .img|cut -f 2- -d-`
+   dracut --force $initrd $version
+done
+
+%end

anaconda/data/post-scripts/Makefile.am

@@ -18,5 +18,5 @@
 # Author: Chris Lumens <clumens@redhat.com>
 
 postscriptsdir = $(datadir)/$(PACKAGE_NAME)/post-scripts
-dist_postscripts_DATA = 80-setfilecons.ks 90-copy-screenshots.ks 99-copy-logs.ks
+dist_postscripts_DATA = 50-qubes.ks 80-setfilecons.ks 90-copy-screenshots.ks 99-copy-logs.ks
 MAINTAINERCLEAFILES = Makefile.in

anaconda/pyanaconda/installclasses/qubes.py

@@ -64,11 +64,6 @@ class InstallClass(BaseInstallClass):
             if autoreq.mountpoint == "/home":
 		storage.autoPartitionRequests.remove(autoreq)
 
-    def postAction(self, anaconda):
-        # Import rpm keys, so that qubes-receive-updates can call rpm -K
-        subprocess.check_call(['/usr/sbin/chroot', anaconda.rootPath,
-            '/bin/bash', '-c', 'rpm --import /etc/pki/rpm-gpg/*'])
-
     def productMatches(self, oldprod):
         if oldprod is None:
             return False