policycoreutils: Add test for SCTP support in semanage
    
    This test simulates a use case where a user wants to confine a
    client-server application communicating over SCTP protocol.
    
    A custom policy module is used to introduce a new port type, domain type
    for the application and an executable file type for the application
    executable as well as a minimal set of allow rules for sctp_test to work
    properly.
    "semanage port" is then used to define SCTP contexts for ports 1025 and
    1026.
    Lastly sctp_test is executed in client-server configuration.