VERIFIED

Version Tested:
Satellite-6.3 Snap 10
foreman-1.15.2-1.el7sat.noarch
satellite-6.3.0-16.0.beta.el7sat.noarch

# grep pattern /etc/foreman/logging.yaml 
  :pattern: "%d %.8X{request} [%c] [%.1l] %m\n"

Example log excerpt:
2017-08-09 12:36:34 614be896 [app] [I] Started GET "/node/sat63-qa-rhel7-puppet4.kangae.example.com?format=yml" for 192.168.121.175 at 2017-08-09 12:36:34 +0000
2017-08-09 12:36:34 614be896 [app] [I] Processing by HostsController#externalNodes as YML
2017-08-09 12:36:34 614be896 [app] [I]   Parameters: {"name"=>"sat63-qa-rhel7-puppet4.kangae.example.com"}
2017-08-09 12:36:34 614be896 [app] [I] Current user: foreman_api_admin (administrator)
2017-08-09 12:36:34 614be896 [app] [I]   Rendered text template (0.0ms)
2017-08-09 12:36:34 614be896 [app] [I] Completed 200 OK in 126ms (Views: 0.4ms | ActiveRecord: 11.3ms)

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2018:0336