[CI] Added support for docker-compose based deployment for EPC

ci-scripts/conf_files/enb.band7.tm1.fr1.25PRB.usrpb210.conf

...cripts/conf_files/gnb.band78.tm1.fr1.106PRB.usrpb210.conf

ci-scripts/constants.py

ci-scripts/epc.py

ci-scripts/main.py

ci-scripts/xml_class_list.yml

ci-scripts/xml_files/fr1_oai_cn_deploy.xml

ci-scripts/xml_files/fr1_oai_cn_undeploy.xml

ci-scripts/yaml_files/fr1_epc_tim/docker-compose.yml