Merge branch 'mrchrisw-set-SIDEKIQ_LOG_ARGUMENTS' into 'master'

Set SIDEKIQ_LOG_ARGUMENTS in gitlab.rb

See merge request !8340

doc/development/sidekiq_debugging.md

@@ -3,12 +3,15 @@
 ## Log arguments to Sidekiq jobs
 If you want to see what arguments are being passed to Sidekiq jobs you can set
-the SIDEKIQ_LOG_ARGUMENTS environment variable.
+the `SIDEKIQ_LOG_ARGUMENTS` [environment variable]
+(https://docs.gitlab.com/omnibus/settings/environment-variables.html) to `1` (true).
+
+Example:
 ```
-SIDEKIQ_LOG_ARGUMENTS=1 bundle exec foreman start
+gitlab_rails['env'] = {"SIDEKIQ_LOG_ARGUMENTS" => "1"}
 ```
-It is not recommend to enable this setting in production because some Sidekiq
-jobs (such as sending a password reset email) take secret arguments (for
+Please note: It is not recommend to enable this setting in production because some 
+Sidekiq jobs (such as sending a password reset email) take secret arguments (for
 example the password reset token).
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