Incorrect documentation for SET_WITH_META + options encoding

While modifying the existing setWithMeta tests to support the new format described here I ran a test case which:

• single node cluster
• create a bucket with timestamp conflict resolution
• sets a key
• gets the meta data for that key - the CAS is 48 bits of timestamp and 16 bits logical counter with is 0
• increment the CAS by 1
• call setWithMeta with extras as 4 byte options, 4 byte flags, 4 bytes expiration, 8 bytes req seq no of 123, and 8 bytes of the CAS
• the command is rejected with invalid arguments - Wireshark capture is attached

The test runner command is:

./testrunner -i one-node.ini  -t epengine.opschangecas.OpsChangeCasTests.test_cas_setMeta_lower

I will reassign this to Jim one I check in the needed test runner changes.