Upgrade version to 2.1.2
* Replace noncopyable class to delete keyword
* Fix error message bug on xmlsec callback function
* Set the SMACK security label to run given executable file in systemd services
* Change cert-server idle timeout time (1s -> 10s)
* Fix bugs in getting certs and pass check
* Remove unused func: dumpNode (svace defect fixed)
* Add certificate domain: TIZEN_REVOKED
* Fix svace defect