Support Ruby 2 keyword arguments

Author: jnunemaker

lib/flipper/named_configuration.rb

@@ -106,7 +106,7 @@ def cloud?
 
     # Internal: Resolve named credentials with explicit isolation from the
     # existing default Cloud environment variables.
-    def resolve_cloud_credentials(credentials = {}, env: ENV)
+    def resolve_cloud_credentials(credentials = {}, env = ENV)
       return @resolved_cloud_options if @resolved_cloud_options
 
       prefix = "FLIPPER_CLOUD_#{name.to_s.upcase}"

spec/flipper/engine_spec.rb

@@ -224,7 +224,7 @@ def initialize
           @get_all_calls = 0
         end
 
-        def get_all
+        def get_all(**_kwargs)
           @get_all_calls += 1
           super
         end