WS-RM needs support for WS-ReliableMessagingPolicy 1.2

Although WS-RM 1.1/1.2 support is included in CXF, the support for WS-RMP 1.1 is not yet implemented and needs to be added. This is a major change from WS-RMP 1.0, with an entirely different set of policy assertions. Currently some of the WS-RMP 1.1 policy assertions are controlled by CXF feature configuration, so the policy support needs to work in combination with the feature configuration. The feature configuration also needs to be extended to support things which were defined as policy assertions in WS-RMP 1.0 but are missing from 1.1 (inactivity timeout, retransmission algorithm and times).