Revert "Merge pull request #2207 from jpartlow/maint/master/simplify-confine-for-6857-test"

This reverts commit 6ad16a47f878df3eb3a31c063bff3e0f5c63745b, reversing
changes made to 2f1bee412b41cd2b244da39883f3a08a37aef1a3.
(maint) Update fedora platform designation for ticket_6857 test

Our config/nodes platform strings have changed and now read 'fedora'
rather than 'fc-' so ticket_6857_password-disclosure-when-changing...
needed to be updated to perform the ruby-libshadow test on fedora again.

Also providing the libshadow test output so we can see a little better
what's going on the next time this needs debugging.
Merge pull request #2217 from jpartlow/maint/master/revert-6857-test-changes-and-match-fedora

Maint/master/revert 6857 test changes and match fedora