Upgraded to EOS 4.4.20-1 in order to address GitLab issue cta/CTA#357

continuousintegration/docker/ctafrontend/cc7/etc/yum/pluginconf.d/versionlock.list

-0:eos-archive-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-cleanup-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-client-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-debuginfo-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-fuse-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-fuse-core-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-fuse-sysv-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-fusex-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-fusex-core-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-fusex-selinux-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-server-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-srm-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-test-4.4.19-20190111105204git8c85301.el7.cern.x86_64
-0:eos-testkeytab-4.4.19-20190111105204git8c85301.el7.cern.x86_64
+0:eos-archive-4.4.20-1.el7.cern.x86_64
+0:eos-cleanup-4.4.20-1.el7.cern.x86_64
+0:eos-client-4.4.20-1.el7.cern.x86_64
+0:eos-debuginfo-4.4.20-1.el7.cern.x86_64
+0:eos-fuse-4.4.20-1.el7.cern.x86_64
+0:eos-fuse-core-4.4.20-1.el7.cern.x86_64
+0:eos-fuse-sysv-4.4.20-1.el7.cern.x86_64
+0:eos-fusex-4.4.20-1.el7.cern.x86_64
+0:eos-fusex-core-4.4.20-1.el7.cern.x86_64
+0:eos-fusex-selinux-4.4.20-1.el7.cern.x86_64
+0:eos-server-4.4.20-1.el7.cern.x86_64
+0:eos-srm-4.4.20-1.el7.cern.x86_64
+0:eos-test-4.4.20-1.el7.cern.x86_64
+0:eos-testkeytab-4.4.20-1.el7.cern.x86_64
 1:python2-xrootd-4.9.0-0.rc1.el7.*
 1:python3-xrootd-4.9.0-0.rc1.el7.*
 1:xrootd-4.9.0-0.rc1.el7.*