Allow config get to work when db is not functional
Summary: Fixes T6554.
Test Plan:
Run bin/config get mysql.host when no db is functional. Should not get an exception, but should see:
{ "config" : [ { "key" : "mysql.host", "source" : "local", "value" : null, "status" : "unset", "errorInfo" : null }, { "key" : "mysql.host", "source" : "database", "value" : null, "status" : "error", "errorInfo" : "Database source is not configured properly" } ] }
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley
Maniphest Tasks: T6554
Differential Revision: https://secure.phabricator.com/D10851