Add support for encrypted client tokens via basic auth (for the docker CLI) and a feature flag to disable normal passwords

config.py

@@ -165,6 +165,10 @@ class DefaultConfig(object):
   # Feature Flag: Whether users can be renamed
   FEATURE_USER_RENAME = False
 
+  # Feature Flag: Whether non-encrypted passwords (as opposed to encrypted tokens) can be used for
+  # basic auth.
+  FEATURE_REQUIRE_ENCRYPTED_BASIC_AUTH = False
+
   BUILD_MANAGER = ('enterprise', {})
 
   DISTRIBUTED_STORAGE_CONFIG = {