Rename DataQualityDict.query_dqsegdb 'url' keyword to 'host'
This PR renames the url
keyword for DataQuality{Flag,Dict}.query_dqsegdb
from url
to host
, to better match the upstream dqsegdb2
parameters.
This also updates the DEFAULT_SEGMENT_SERVER
to be imported from dqsegdb2
rather than independently set, and introduces some reformatting for readability.
Depends on #1730.