Reference QUOTA OptGoup names in lowercase

To have consistent option group name format across projects,
oslo.config now normalizes all non lowercase group names to lowercase
when loading conf files.
Thus conf files are backwards compatible but option group references
in the code must now use lowercase before we update oslo.config.

This patch replaces all 'QUOTA' references to 'quota'

Change-Id: I74c2a35aea7a52f9586eb598fe52d2cecb1851ef
Reference DEFAULT_SERVICETYPE OptGoup names in lowercase

To have consistent option group name format across projects,
oslo.config now normalizes all non lowercase group names to lowercase
when loading conf files.
Thus conf files are backwards compatible but option group references
in the code must now use lowercase before we update oslo.config.

This patch replaces all 'DEFAULT_SERVICETYPE' references to
'default_servicetype'

Change-Id: Iccab055c4664e11c9618706e594416194065048b
Make logging level in unit tests configurable.

Added a debug option to unittest(BaseTestCase) which sets logging level of
fixtures.FakeLogger to DEBUG. To enable this option, set OS_DEBUG=True or
OS_DEBUG=1 in environment variables.

Fixes: bug #1181925
Change-Id: Id09008ddabb837290edf12e1cbd014dc74760113
Enable quantum-netns-cleanup to receive force as cli parameter

Fixes bug 1180767

Change-Id: Icd58fbe995129806426b70ea54d98f213988dbe5
Merge "Make logging level in unit tests configurable."
Merge "Reference QUOTA OptGoup names in lowercase"
Merge "Enable quantum-netns-cleanup to receive force as cli parameter"
Merge "Reference DEFAULT_SERVICETYPE OptGoup names in lowercase"