Revert MTC legacy operator version number

apinnick · apinnick · commit 544db6a1aef9 · 2021-12-07T10:36:03.000+02:00
diff --git a/modules/common-attributes.adoc b/modules/common-attributes.adoc
@@ -43,4 +43,4 @@ endif::[]
 :mtc-full: Migration Toolkit for Containers
 :mtc-version: 1.6
 :mtc-legacy-version: 1.5
-:mtc-legacy-version-z: 1.5.3
+:mtc-legacy-version-z: 1.5.1
