MIG-1078 Updating MTC 1.7 Compatibility Guidelines.

Author: stoobie

_attributes/common-attributes.adoc

@@ -46,7 +46,7 @@ endif::[]
 :launch: image:app-launcher.png[title="Application Launcher"]
 :mtc-short: MTC
 :mtc-full: Migration Toolkit for Containers
-:mtc-version: 1.6
+:mtc-version: 1.7
 :mtc-legacy-version: 1.5
 :mtc-legacy-version-z: 1.5.3
 //gitops