more places to replace latest with release-0.8 branch

Signed-off-by: Shawn Hurley <[email protected]>

Author: shawn-hurley

helm/templates/crds/tackle.konveyor.io_extensions.sample.yaml

@@ -13,7 +13,7 @@ spec:
     env:
     - name: PORT
       value: ${seq:8000}
-    image: quay.io/konveyor/generic-external-provider:latest
+    image: quay.io/konveyor/generic-external-provider:release-0.8
     imagePullPolicy: Always
     name: myextension
     resources: