Clamp backend rest calls must be aligned on the changes done on the PAP

https://jira.onap.org/browse/POLICY-2526

To summarize:

1. It was using this api to get deployment status GET /policy/pap/v1/policies/deployed/{name}/{version}---> This must be replaced by "/policy/pap/v1/policies/status/{pdpGroupName}/{policyName}/{policyVersion}" RETURN code 200
2. It was using this api to deploy or undeploy in batch: POST clamp.config.policy.pap.url/policy/pap/v1/pdps/deployments/batch---> The return code is now 202 (No impact)
3. It was using this api to undeploy one specific policy: DELETE clamp.config.policy.pap.url/policy/pap/v1/pdps/policies/${exchangeProperty[policyName]}/versions/${exchangeProperty[policyVersion]} ---> The return code is now 202 (No impact)