feature to apply-changes to specific products by name

tasks/apply-changes.sh

@@ -18,6 +18,13 @@ if [ -n "${ERRAND_CONFIG_FILE}" ]; then
   flags+=("--config" "${ERRAND_CONFIG_FILE}")
 fi
 
+if [ -n "${PRODUCTS}" ]; then
+  IFS=':' read -ra product_names <<< "${PRODUCTS}"
+  for product_name in "${product_names[@]}"; do
+    flags+=("--product-name" "${product_name}")
+  done
+fi
+
 # ${flags[@] needs to be globbed to pass through properly
 # shellcheck disable=SC2068
 om --env env/"${ENV_FILE}" apply-changes \

tasks/apply-changes.yml

@@ -38,6 +38,12 @@ params:
   # - This is not recommended unless unless the warning failure(s)
   #   are well understood.
 
+  PRODUCTS:
+  # - Optional
+  # - Defaults to all products.
+  # - Colon separated string of products;
+  #   for example, `cf:pivotal-telemetry-om:...`
+
 run:
   path: platform-automation-tasks/tasks/apply-changes.sh
 # code_snippet apply-changes end