working update schedule policy

When schedule policy is updated, its respective entry in scaling_schedule is also updated

Need to add more tests
added more tests
Initial verification for server deletion
Verification happens in a loop until the server has been deleted
Actually call verified delete from delete_server
fix lint
uncommented AUTO-467 tests

and removed disallow_update tests.
Also fixed status code check after successful update
in pom.xml, add Constanze & Felix to notification list for Hashover comments; in devguide.xml, change raxm:product to cas for publication
Move verify Deferred into the scope that actually uses it
Move some general utility things to test utils
Make a mock logger that will make sure no extra methods can get called, and that should make testing logging a little easlier
standardize descriptive text in autoscale.wadl: add shortdesc for one-line description in API Operations table; add clarifying details to full description; use consistent capitalization in titles
Clarify mock_log docstring as to how and why to use it
relocate Pause Policy and Resume Policy into Policies section (from Configurations)
Remove airbrake usage.
Remove airbrake dependency, opt_requirements, and all references to opt_requirements.
Fix lint.
updates after edit
Fix docstring of mock_log
test refactoring - per @cyli

having a method to validate only policy update calls and seperate method to validate update made in
scaling_schedule table
Removing checking of select calls when get_policy is called since that has been seperately tested.
Instead mocking it