Updated git submodules

Updated git submodules

Project: integration/packaging master e29cf36568db5863457e4b541ad2e17aa8768c99

Always use current datetime in pkg changelogs

Don't accept a changelog_date param in packaging build logic. Instead,
always automatically find the current datetime and format it
appropriately based on package type.

Now that we're typically building from CI, and not supporting static
builds defined in var files, there's no valid usecase for using a
changelog datetime other than the current datetime. Keeping it just
adds complexity.

Also extract datetime formatting logic to a helper function.

Change-Id: I041f8852a340ff554934a274d3523cc27fcfc464
Signed-off-by: Daniel Farrell <dfarrell@redhat.com>