Merge branch '13201-rename-snowplow_collector_uri-to-snowplow_collector_hostname' into 'master'

Add migration for CE as well

Closes #13201

See merge request gitlab-org/gitlab-ce!31405

db/migrate/20190801193427_rename_application_settings_snowplow_collector_uri_column.rb

+# frozen_string_literal: true
+
+class RenameApplicationSettingsSnowplowCollectorUriColumn < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    rename_column_concurrently :application_settings, :snowplow_collector_uri, :snowplow_collector_hostname
+  end
+
+  def down
+    cleanup_concurrent_column_rename :application_settings, :snowplow_collector_hostname, :snowplow_collector_uri
+  end
+end

db/post_migrate/20190802091750_cleanup_application_settings_snowplow_collector_uri_rename.rb

+# frozen_string_literal: true
+
+class CleanupApplicationSettingsSnowplowCollectorUriRename < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    cleanup_concurrent_column_rename :application_settings, :snowplow_collector_uri, :snowplow_collector_hostname
+  end
+
+  def down
+    rename_column_concurrently :application_settings, :snowplow_collector_hostname, :snowplow_collector_uri
+  end
+end

db/schema.rb

@@ -195,7 +195,6 @@ ActiveRecord::Schema.define(version: 2019_08_02_235445) do
     t.boolean "pseudonymizer_enabled", default: false, null: false
     t.boolean "hide_third_party_offers", default: false, null: false
     t.boolean "snowplow_enabled", default: false, null: false
-    t.string "snowplow_collector_uri"
     t.string "snowplow_site_id"
     t.string "snowplow_cookie_domain"
     t.boolean "instance_statistics_visibility_private", default: false, null: false
@@ -231,6 +230,7 @@ ActiveRecord::Schema.define(version: 2019_08_02_235445) do
     t.integer "raw_blob_request_limit", default: 300, null: false
     t.boolean "allow_local_requests_from_web_hooks_and_services", default: false, null: false
     t.boolean "allow_local_requests_from_system_hooks", default: true, null: false
+    t.string "snowplow_collector_hostname"
     t.index ["custom_project_templates_group_id"], name: "index_application_settings_on_custom_project_templates_group_id"
     t.index ["file_template_project_id"], name: "index_application_settings_on_file_template_project_id"
     t.index ["usage_stats_set_by_user_id"], name: "index_application_settings_on_usage_stats_set_by_user_id"