Remove unneeded arches from opensuse updates mirror

We mirror a number of arches in the opensuse updates mirror that we
don't use. Remove them.

Change-Id: I008167802ed40feed54bd3d5cb4ecac984ea6a8c

playbooks/roles/mirror-update/files/opensuse-mirror-update

@@ -77,6 +77,11 @@ for DISTVER in 15.2 ; do
         --exclude="non-oss/" \
         --exclude="non-oss_debug/" \
         --exclude="oss_debug/" \
+        --exclude="aarch64/" \
+        --exclude="i586/" \
+        --exclude="i686/" \
+        --exclude="ppc64le/" \
+        --exclude="s390x/" \
         --exclude=".~tmp~" \
         $MIRROR/$REPO/ $BASE/$REPO/
 done