refactor function defs to be posix-like. remove usage of force positional argument in tests. support --force like arguments in client"

plugins/checks/check-deploy

@@ -40,7 +40,7 @@ if [[ ! -f "$FILENAME" ]] ; then
     echo "       CHECKS file found in container"
     FILENAME=${TMPDIR}/CHECKS
 
-    function cleanup() {
+    cleanup() {
       echo "       removing CHECKS file copied from container"
       rm -rf $TMPDIR
     }