container-toolbox: Fix typo between %pre and %post
The snippet to fix the /run/lock breakage and the lines following it
were copied from the first %post section in fedora-container-base.ks.
However, the %end marker to terminate the previous %pre section, and the
starting %post marker went missing in fedora-container-toolbox.ks
https://pagure.io/fedora-kickstarts/pull-request/993