Prefix database parameters with database

Be consistent with other puppet modules for OpenStack by prefixing
database related parameters with database.

Properly deprecate sql_* parameters and other database parameters.

Conflicts:
	spec/classes/neutron_server_spec.rb

Closes-bug: #1273771
Change-Id: I6c5fa5426162e2dd358a360324abb040c7462f16
(cherry picked from commit a6232366a2d538447a6568ec61ddbe9fcbdecad6)
Merge "Prefix database parameters with database" into stable/havana