Emulate local_settings.py settings in the test suite
Sensible default values for HSS/password encryption settings when using an /etc/clearwater/config without the values set
Deprecate HSS_ENABLED in favour of checking whether HSS_IP is blank or 0.0.0.0
Remove remaining references to HSS_ENABLED
Merge branch 'sensible_defaults' into ut_fix

Conflicts:
	src/metaswitch/crest/settings.py
	src/metaswitch/crest/test/api/homestead/credentials.py
	src/metaswitch/crest/test/api/homestead/filtercriteria.py
	src/metaswitch/crest/test/api/homestead/hss/gateway.py
Reinstate HSS_ENABLED, but set it based on the value of HSS_IP rather than as an independent variable
Merge pull request #21 from Metaswitch/ut_fix

{Reviewer: Felix} Emulate local_settings.py settings in the test suite, set HSS_ENABLED based on HSS_IP, and allow sensible default values for HSS/password encryption settings when using an /etc/clearwater/config without the values set