We had a problem when the nova connection string included parameters on the
query string like charset encoding.
Note that the connection string necessarly needs to be RFC1738 compliant as
per Sqlalchemy rules, so it's totally safe to just unquote what the SQLA
helper method gives us as a result.
Also removed a tested connection string since it wasn't RFC1738 compatible.
Conflicts:
nova/tests/unit/test_nova_manage.py
NOTE(sbauza): The conflict is due to ddt not being used in Newton.
Change-Id: I45fe9b92e8d93a0099d33bb0070e9d4e540595ac
Closes-Bug: #1696001
(cherry picked from commit 9a33092fa9)
(cherry picked from commit 6041572a4c)