QA/TestCases/LUKS Using Selinux (enforcing)

Description
Support the use of encrypted filesystems for anything other than /boot using cryptsetup and LUKS. This includes install time creation/configuration, as well as integrated support in mkinitrd and initscripts (others?). Currently we are only pursuing support for encrypted devices using cryptsetup/LUKS.

When using encrypted file systems/block devices, the selinux functionality should continue to work as expected, and not create situations where the encryption leads to undesired selinux errors; in particular, a successful installation using any of the operating selinux modes "enforcing", "permissive" and "disabled" should be successful.

References:
 * 1) Anaconda/Features/EncryptedBlockDevices
 * 2) Releases/FeatureEncryptedFilesystems

Steps To Reproduce
"Remove linux partitions on selected drives and create default layout"
 * Boot anaconda
 * Proceed to the partitioning dialog
 * Select the checkbox item "Encrypt system"
 * Enable the default selinux (enforcing) setting
 * Enter and confirm the passphrase in a pop up dialog for the encrypted filesystem
 * choose default partitioning layout and continue to the disk druid partition screen
 * continue with installation

Expected Results

 * Confirmed "Encrypt system" item is checked
 * Verify installation completes successfully
 * Upon reboot, the user is asked for the LUKS passphrase at the console
 * Verify entry in /etc/crypttab is present for LUKS device
 * Verify selinux is in "enforcing" mode in post-install system
 * post-install system boots completely and is usable, and does not have selinux errors that would significantly hamper system operation
 * post-install system boots completely and is usable, and does not have selinux errors that would significantly hamper system operation

/etc/crypttab may look something like: luks-sda2   /dev/sda2    none