Added haproxy management

Added optional haproxy management code, also added two parameters
to contrail class,

1. manage_haproxy - Whether to manage haproxy in this module
2. control_ip_list - An array of contrail control node IP list
Added cassandra management code

Added cassandra management code to contrail module
Added redis management code

Added optional redis management code to contrail
Added contrail ifmap-server management code

Added contrail ifmap-server management code with unit tests.