This patch set pins down package requirements for the following
reasons:
* Inconsistencies between ranges and direct pins
* Deckhand isn't gated against requirements repo so changes to
some packages isn't actively tested
* Other Airship components use pins, so Deckhand might break them
when package requirements go out of sync between components
* Deckhand as of yet has no stable release so Airship relies on
master for stability so it is better to ensure stability over
anything else
Change-Id: I20ef4be3e01cd267771098d33447ccb61aee20b4
38c1d7a1a3