control: Add request target base action

Add the YAML based set_request_speed_base_with_max action function as an
action class for JSON configs to use. This action required to be
enhanced to handle the different supported data types of groups that
could be configured in the JSON with this action.

Change-Id: I8cc223cc10d33462ddc303145fee08347ea7c8b5
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
6 files changed