Use correct types for thresholds

Currently in this template parameters have type Number, but
CloudWatchAlarm has threshold type String. This fix change
Type parameters to String.

Change-Id: If7030063f8bae6b70648a07acb086c341a75373f
remove  test_service_enable_disable in nova V3 tests

additional patch for change Ib681b393944b37c720e7a245e8b19b5254d116fd:
this removes the test: test_service_enable_disable, due to race
condition. And there is a discussion in the mail list.
http://lists.openstack.org/pipermail/openstack-dev/2013-November/018867.html

Change-Id: I7d54a72b45cb31e483f6833a12453d1a5cecdf61
Closes-bug: #1257506
Handle rest client 500 response if non-json body

* Rest client should gracefully handle 500 response from api
  with non-json body.
* Use response body as is in case of above issue.

Change-Id: I1adf2e0af0abead0767d628142a18916154ada79
Closes-Bug: #950449
Merge "remove  test_service_enable_disable in nova V3 tests"
Merge "Use correct types for thresholds"
Merge "Handle rest client 500 response if non-json body"
Rename create_test_server to create_temp_server

Change https://review.openstack.org/#/c/58645/ introduced bug 1247161 when
running under nose as the method name includes "test".
Renamed to not use test and updated HACKING to give advice against using
"test" in a method name.

Closes-bug: 1247161

Change-Id: I9f6d7d5fc9b3b94e1fbf395a62177c8df7e9f5b4