Changes required for running CI tests (Pike pod).

Changes required for running CI tests (Pike pod).

Added support for HTTPS proxies
HTTPS OSCreds settings for both RC file and os_env.yaml
OSCreds 'cacert' T/F and cert file path support
OSCreds API version support cleanup including the addition
of heat
Added more OSCreds test validations
Disabling of InsecureRequestWarning
PEP8 line width refactoring
heat_utils_test.py fix when stack status is error
test suite for CI
removed default flavor metadata of mem_page_size: Any to None

JIRA: SNAPS-80

Change-Id: I333e83ca79d7403bf43a9b74da4c072b4da976ba
Signed-off-by: spisarski <s.pisarski@cablelabs.com>