merging cassandra archive stub from branch 4.0.7

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@167191 a5903396-d722-0410-b921-86c7d4935375
merging cassandra archive component from branch 4.0.7

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@167192 a5903396-d722-0410-b921-86c7d4935375
merging cassandra archive component from branch 4.0.7

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@167193 a5903396-d722-0410-b921-86c7d4935375
adding the cassandra archive module to bam2

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/platform/trunk@167194 a5903396-d722-0410-b921-86c7d4935375