Divert collect output to a separate debug log in archive

[bfahr]

• During collection in dr.run_all, exceptions may be added to the log when in DEBUG mode, so capture all output from dr.run_all into a separate log and save it in the archive for analysis.
• These exceptions are expected, and do not normally impact the execution of the client, but may be confusing in the client log.
• Fix #2943

Signed-off-by: Bob Fahr [email protected]

[candlepin-bot]

Can one of the admins verify this patch?