Redact standalone password option in log_info

The Redis password can be configured as either part of the
:url (in the userinfo) or in the standalone :password
option. This updates #log_info to redact the password from the latter.
Merge pull request #1790 from ryanbrainard/redact-password-option

Redact standalone password option in log_info
Include millis in the timestamp, #1789
Update how we eager load Rails applications, #1791
more changes