Cache initialization tests
Skeleton request processing test
PutIMSSubscription tests working
Put tests working
Make the interface to the cache const where possible
Test deletes
Refactor tests
First Get test
org::apache::cassandra:: -> cass::
Add make_slice utility method
Fill in remaining tests
Exclude un-hit lines from code coverage
Tidy up cache tests
Merged in cache_ut (pull request #10)

Check in cache UTs.
HttpStack UT
Merge branch 'httpstack_ut'

Conflicts:
	src/Makefile
Default hss_hostname and hss_port if not set in /etc/clearwater/config
Correct enum namespacing, and misc otrher small changes
Merge remote-tracking branch 'origin/master' into cache_ut
Merged cache_ut into master