Changes made to get a working COPSDecisionMsg.

Test.java menu option 2 implements the working COPSDecision message.
        See PKT-SP-MM-I06-110629.pdf section 10.2 #3 page 130 for format.

COPSClientSI overloaded to accept Cnum for PCMM Client Specific Descision Object. For example,
        COPSClientSI clientSD = new COPSClientSI(COPSObjHeader.COPS_DEC, (byte)4);

Add flag for Context not previously supported
        public final static byte F_REQERROR = 0x1;

pom.xml correction to allow junit in main as well as test.