Don't skip tests for some bugs

Skipping tests for a bug is a bad idea since if the bug is fixed
it's a manual process to find the affected test rather than being
found automatically by the tests.

Change-Id: I8109459bc825c5dc042e386432cb3496871f9862
Make live LDAP user DN match the default from devstack

The default LDAP user DN in devstack uses the "cn" attribute in
the RDN.  The live LDAP test default configuration is supposed to
match the default devstack config, but the RDN is incorrectly
using the "dc" attribute.  This patch corrects the live LDAP
default config to match devstack.

Change-Id: Iee49606526047105b4e60142af32b4ec81a19444
Closes-Bug: 1280509
Merge "Make live LDAP user DN match the default from devstack"
Merge "Don't skip tests for some bugs"