Revert "load dynamodb config from consul instead of yml"

This reverts commit a8cb21616c.

Change-Id: Ice3ead98d4a33b5df14b52b349255eeb5d2df76c
Reviewed-on: https://gerrit.instructure.com/211016
Tested-by: Jenkins
Reviewed-by: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>

config/dynamic_settings.yml.example

@@ -44,13 +44,6 @@ development:
       # permissions (such as microphone/camera access) per-file. You must have wildcard
       # DNS set up for this to work.
       attachment_specific_file_domain: true
-      dynamodb.yml: |
-        auditors:
-          region: US East
-          access_key_id: ASDFASDF
-          secret_access_key: ZXCVZXCV
-          endpoint: http://localhost:8000
-          table_prefix: canvas_auditors
       ha_cache.yml: |
         cache_store: ha_store
         servers:

config/dynamodb.yml.example

@@ -0,0 +1,7 @@
+development:
+  auditors:
+    region: US East
+    access_key_id: ASDFASDF
+    secret_access_key: ZXCVZXCV
+    endpoint: http://localhost:8000
+    table_prefix: canvas_auditors

lib/canvas/dynamo_db/database_builder.rb

@@ -72,7 +72,7 @@ module Canvas
       end
 
       def self.configs(environment = default_environment)
-        YAML.load(Canvas::DynamicSettings.find(tree: :private)['dynamodb.yml'] || '{}').with_indifferent_access
+        ConfigFile.load('dynamodb', environment) || {}
       end
 
       def self.categories