Update analytics server configuration steps

[vinyar]

URL: https://docs.chef.io/install_analytics.html

Bug: chef-server.rb steps are unnecessarily broken up into two steps.

Where?
In the section Configure the Chef server. On each server in the Chef server configuration, do the following:

What?
Step Step 2 - Stop the Chef server should be performed before or after chef-server.rb steps.
Editing chef-server.rb should be performed all in one step

Related bugs:

• It would be nice to call out if chef server on the backend or front end should be stopped first.
• Reconfigure the Chef management console: This step should be clarified for Tiered and HA configurations
• It would be nice if cp for copying files was also in the 1.1 text
  Example: scp -r /etc/opscode-analytics root@<ip_of_analytics_server>:/etc