updates to carbon deployment engine based on recent suggestions and discussions. Defing a DeploymentService API's for user level interaction with DeploymentEngine

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@190534 a5903396-d722-0410-b921-86c7d4935375
fixing build breaks

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@190536 a5903396-d722-0410-b921-86c7d4935375
adding missing file with latest revision

git-svn-id: https://svn.wso2.org/repos/wso2/carbon/kernel/trunk@190537 a5903396-d722-0410-b921-86c7d4935375