* Removes (non-working) Kong config.ini support
* Replaces copy/paste code from stack.sh that was not
properly grabbing image UUIDs with a call to glance
index
* Grabs any non-kernel non-ramdisk images and properly populates
the IMAGE_UUID_ALT variable if more than 1 image is
available
Change-Id: Ieaf892b8b3fb4ef4fe2e6168f7a53bbe42dd684c