[sssd PR#307][synchronized] IPA: Only attempt migration for the joined domain

[jhrozek]

   URL: https://github.com/SSSD/sssd/pull/307
Author: jhrozek
 Title: #307: IPA: Only attempt migration for the joined domain
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/307/head:pr307
git checkout pr307