Add logging for redis connection parameters

[nrejac]

Add logging here:

idb-backend/idigbio_workers/__init__.py

Lines 20 to 24 in a2aa0bb

	def get_redis_connection_params():
	from kombu.utils.url import _parse_url
	url = app.conf['broker_url']
	scheme, host, port, user, password, path, query = _parse_url(url)
	return {'host': host, 'port': port, 'db': path}

Specifically, for when this method is called:

idb-backend/idb/data_api/v2_download.py

Lines 27 to 28 in a2aa0bb

	def download():
	rconn = get_redis_conn()

which then calls:

idb-backend/idigbio_workers/__init__.py

Lines 27 to 29 in a2aa0bb

	def get_redis_conn():
	import redis
	return redis.StrictRedis(**get_redis_connection_params())