FIX: Allow CUPS creation to evaluate $SPACE

Signed-off-by: Dave Goddard <dave@goddard.id.au>

tasks/create-service.yml

@@ -18,6 +18,6 @@ run:
       cf create-service $CREATE_SERVICE
     fi
     if [ ! -z "$CREATE_CUPS" ]; then
-      export CREATE_CUPS=$(echo $CREATE_CUPS | sed "s/\${SPACE}/$SPACE/")
+      export CREATE_CUPS=`echo $CREATE_CUPS | sed "s/\${SPACE}/$SPACE/"`
       cf cups $CREATE_CUPS
     fi