Enable H403

Fix the only two places where it triggered alongway.

Change-Id: Ib76e0e072c2d51a9c782f37d5f5df964f2db968f
raise an UnknownUserParameter exception when receiving an unknown param

add some validation logic to Parameters, so that when an invalid param
is passed in an exception will be raised.

Fixes bug #1186790

Change-Id: I8aece556d8fc5cd5533f4baf041e345bdc5722ec
Initial mariadb support

mariadb only differs in the package name from the mysql,
an already installed mariadb should not cause hangup in a
devstack installation.

Fixing Bug 1184722

Change-Id: I3b9d02b703e49044999ff1b9f1195ffcaf1d0cec
Use Python 3.x compatible octal literals

Python 3.x deprecated the 0700 construct. 0o700
works with any version of Python (>= 2.6 tested)

Change-Id: I47fcb79804b75437e6cf4ce966fbfdc05fce26cd
Merge "raise an UnknownUserParameter exception when receiving an unknown param"
Merge "Use Python 3.x compatible octal literals"
Merge "Initial mariadb support"