Remove isos and other images from rpm mirroring

We build our own images from scratch using yum/dnf and don't rely on the
isolinux/ or images/ content. Clean this up from our mirrors to reduce
their size and time to sync.

Change-Id: Ifa47c8ae1f3a080e69e4c00b0c2ef38f4094e1a2

playbooks/roles/mirror-update/files/centos-mirror-update

@@ -59,6 +59,8 @@ $K5START ${RSYNC} \
     --delete \
     --delete-excluded \
     --exclude="isos" \
+    --exclude="images/" \
+    --exclude="isolinux/" \
     --exclude="ppc64le*" \
     --exclude=".*" \
     $MIRROR $BASE/8-stream
@@ -88,6 +90,8 @@ for REPO in $REPOS; do
     --exclude="experimental" \
     --exclude="fasttrack" \
     --exclude="isos" \
+    --exclude="images/" \
+    --exclude="isolinux/" \
     --exclude="paas" \
     --exclude="*/drpms" \
     $EXTRA_OPTS \

playbooks/roles/mirror-update/files/centos-stream-mirror-update

@@ -50,6 +50,8 @@ $K5START ${RSYNC} \
     --delete \
     --delete-excluded \
     --exclude="iso" \
+    --exclude="images/" \
+    --exclude="isolinux/" \
     --exclude="debug" \
     --exclude="s390x" \
     --exclude="source" \

playbooks/roles/mirror-update/files/fedora-mirror-update

@@ -48,6 +48,9 @@ for REPO in releases/35 development/rawhide; do
     $K5START rsync -rltvz \
         --delete \
         --delete-excluded \
+        --exclude="iso/" \
+        --exclude="images/" \
+        --exclude="isolinux/" \
         --exclude="Cloud/x86_64/images/*.box" \
         --exclude="CloudImages/x86_64/images/*.box" \
         --exclude="Container" \

playbooks/roles/mirror-update/files/openeuler-mirror-update

@@ -47,6 +47,8 @@ for REPO in $REPOS; do
     --delete \
     --delete-excluded \
     --exclude="ISO/" \
+    --exclude="images/" \
+    --exclude="isolinux/" \
     --exclude="debuginfo/" \
     --exclude="docker_img/" \
     --exclude="raspi_img" \