Update kombu requirement

The minimum version of kombu in the requirements
list has been updated to ensure that compatible
kombu and msgpack libraries are used across all
projects. This update also requires a bump for
anyjson.

Addresses bug #1134575

Change-Id: Ic33a5bbc8d1cdf1effd41c1c2aebc7ef6988c39e
Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
Merge "Update kombu requirement"