Added CentOS and Oracle Linux versions mapping

apache/osfingermap.yaml

@@ -3,4 +3,12 @@ default:
 Red Hat Enterprise Linux Server-6:
   version: '2.2'
 Red Hat Enterprise Linux Server-7:
-  version: '2.4'
+  version: '2.4'
+CentOS-6:
+  version: '2.2'
+CentOS-7:
+  version: '2.4'
+Oracle Linux Server-6:
+  version: '2.2'
+Oracle Linux Server-7:
+  version: '2.4'