Add project_key colum to jira_tracker_data table

This is the foundation to expand the Jira integration.

changelogs/unreleased/223185-add-project-key-to-jira-tracker-data.yml

+---
+title: Add project_key column to jira_tracker_data table
+merge_request: 34949
+author:
+type: other

db/migrate/20200619154527_add_project_key_to_jira_tracker_data.rb

+# frozen_string_literal: true
+
+class AddProjectKeyToJiraTrackerData < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  # rubocop:disable Migration/AddLimitToTextColumns
+  # limit is added in 20200619154528_add_text_limit_to_jira_tracker_data_project_key
+  def change
+    add_column :jira_tracker_data, :project_key, :text
+  end
+  # rubocop:enable Migration/AddLimitToTextColumns
+end

db/migrate/20200619154528_add_text_limit_to_jira_tracker_data_project_key.rb

+# frozen_string_literal: true
+
+class AddTextLimitToJiraTrackerDataProjectKey < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_text_limit :jira_tracker_data, :project_key, 255
+  end
+
+  def down
+    remove_text_limit :jira_tracker_data, :project_key
+  end
+end

db/structure.sql

@@ -3655,7 +3655,9 @@ CREATE TABLE public.jira_tracker_data (
     encrypted_username_iv character varying,
     encrypted_password character varying,
     encrypted_password_iv character varying,
-    jira_issue_transition_id character varying
+    jira_issue_transition_id character varying,
+    project_key text,
+    CONSTRAINT check_214cf6a48b CHECK ((char_length(project_key) <= 255))
 );
 
 CREATE SEQUENCE public.jira_tracker_data_id_seq
@@ -14118,6 +14120,8 @@ COPY "schema_migrations" (version) FROM STDIN;
 20200618105638
 20200618134223
 20200618134723
+20200619154527
+20200619154528
 20200622103836
 \.