Wrap API and registry requests with common metric timings

Record response times, codes, and rollup non-2XX responses.

endpoints/v1/__init__.py

@@ -1,10 +1,13 @@
 from flask import Blueprint, make_response
 
+from app import metric_queue
 from endpoints.decorators import anon_protect, anon_allowed
+from util.saas.metricqueue import time_blueprint
 
 
 v1_bp = Blueprint('v1', __name__)
 
+time_blueprint(v1_bp, metric_queue)
 
 # Note: This is *not* part of the Docker index spec. This is here for our own health check,
 # since we have nginx handle the _ping below.