Prometheus metrics for policy deploy/undeploy requests for APEX
Added counters for:
- Policy deploy/undeploy requests total
- Policy deploy/undeploy successful requests total
- Policy deploy/undeploy failed requests total
Cleaned up unused method resetAllStatistics.
Fixed some checkstyle warnings
Update to latest snapshot for parent, and common modules
Depends on https://gerrit.onap.org/r/c/policy/parent/+/125974 for build to pass.
Issue-ID: POLICY-3760
Change-Id: I4a9447c9caea7a018dba86057b9dae3871910709
Signed-off-by: Rashmi Pujar <rashmi.pujar1@bell.ca>