remove whitelist replace with allowlist (#4050)

Author: leahecole

appengine/flexible/memcache/README.md

@@ -17,7 +17,7 @@ to do so is to use a Bitnami click-to-deploy:
 
 https://bitnami.com/stack/memcached/cloud/google
 
-Built-in Memcache for Flexible environments is currently in a whitelist-only alpha. To have your project whitelisted,
+Built-in Memcache for Flexible environments is currently in a allowlist-only alpha. To have your project allowlisted,
 see the signup form here:
 
 https://cloud.google.com/appengine/docs/flexible/python/upgrading#memcache_service

translate/cloud-client/snippets.py

@@ -76,7 +76,7 @@ def translate_text_with_model(target, text, model='nmt'):
     # [START translate_text_with_model]
     """Translates text into the target language.
 
-    Make sure your project is whitelisted.
+    Make sure your project is allowlisted.
 
     Target must be an ISO 639-1 language code.
     See https://g.co/cloud/translate/v2/translate-reference#supported_languages