use qemu and expect to do selinux relabelling on created disk image

Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D428

createhdds.sh

@@ -28,13 +28,24 @@ write /testfile "Hello, world!"
 _EOF_
 
 echo "Creating disk_f21_minimal.img..."
-# TODO: it should be possible to create updated image, but there is a bug, see https://bugzilla.redhat.com/show_bug.cgi?id=1084221
-# so you are required to manually boot this image and run 'yum -y update'
-#virt-builder fedora-21 -o disk_f21_minimal.img --update --selinux-relabel --root-password password:weakpassword
-virt-builder fedora-21 -o disk_f21_minimal.img --root-password password:weakpassword
+virt-builder fedora-21 -o disk_f21_minimal.img --update --selinux-relabel --root-password password:weakpassword > /dev/null
+expect <<_EOF_
+log_user 0
+set timeout -1
+
+spawn qemu-kvm -m 2G -nographic disk_f21_minimal.img
+
+expect "localhost login:"
+send "root\r"
+expect "Password:"
+send "weakpassword\r"
+expect "~]#"
+send "poweroff\r"
+expect "reboot: Power down"
+_EOF_
 
 echo "Creating disk_ks.img..."
-curl -o "/tmp/root-user-crypted-net.ks" "https://jskladan.fedorapeople.org/kickstarts/root-user-crypted-net.ks"
+curl --silent -o "/tmp/root-user-crypted-net.ks" "https://jskladan.fedorapeople.org/kickstarts/root-user-crypted-net.ks" > /dev/null
 guestfish <<_EOF_
 sparse disk_ks.img 100MB
 run