Start refactoring of the trigger system:

- Move each trigger handler into its own file
- Add dictionary helper classes for easier reading and writing of dict-based data
- Extract the web hook payload -> internal representation building for each trigger system
- Add tests for this transformation
- Remove support for Github archived-based building

endpoints/api/build.py

@@ -9,12 +9,12 @@ from flask import request
 from rfc3987 import parse as uri_parse
 
 from app import app, userfiles as user_files, build_logs, log_archive, dockerfile_build_queue
+from buildtrigger.basehandler import BuildTriggerHandler
 from endpoints.api import (RepositoryParamResource, parse_args, query_param, nickname, resource,
                            require_repo_read, require_repo_write, validate_json_request,
                            ApiResource, internal_only, format_date, api, Unauthorized, NotFound,
                            path_param, InvalidRequest, require_repo_admin)
 from endpoints.building import start_build, PreparedBuild
-from endpoints.trigger import BuildTriggerHandler
 from data import database
 from data import model
 from auth.auth_context import get_authenticated_user