QA/TestCases/LUKS Enter Passphrase (Use free space on selected drives and create default layout)

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 selecting the "Encrypt System" checkbox in anaconda, it is necessary to prompt the user for a passphrase to use for the encrypted filesystem.

References:
 * 1) Anaconda/Features/EncryptedBlockDevices
 * 2) Releases/FeatureEncryptedFilesystems
 * 3) Testopia case #69

Steps To Reproduce
"Use free space on selected drives and create default layout"
 * Boot anaconda
 * Proceed to the partitioning dialog
 * Select the checkbox item "Encrypt system"
 * Enter and confirm the passphrase in a pop up dialog for the encrypted filesystem
 * choose "Use free space" partitioning layout and continue to the disk druid partition screen
 * continue with installation

Expected Results

 * Confirmed "Encrypt system" item is checked
 * Confirm able to enter and confirm the passphrase in the pop up dialog
 * Proceed to the disk druid screen
 * Verify the pre-existing partition is resized and the new default logical volume group is created in the free space from the resize
 * Verify the default logical volume group (VolGroup00) displays a "locked" icon in the format column
 * 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

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