Description of problem:


If on a satellite you have two different products with a repository with the same label, for example:

Product A
  Repo w/ label: foo

Product B
  Repo w/ label: foo

and you publish both of these in the same Content view with label 'bar'.  OR

You have such things in two different orgs, and you publish them in two different content views with the same label.  Migration will succeed, but content-stats will show:

============Migration Summary================
Migrated/Total RPMs: 32/32
Migrated/Total errata: 3/3
Migrated/Total repositories: 4/6


Notice that only 2 out of 4 repos are migrated!  If you try to do a switchover, it will fail with:


Failed executing foreman-rake katello:pulp3_post_migration_check, exit status 1:
 ERROR: yum repositories with ID [42880,42948,42418,42600,42238,30634,28592] have a NULL value for version_href


How reproducible:
always

Steps to Reproduce:
1.  Create ProductA
2.  Create a repo in ProductA with label 'foo' pointed to some repo, sync it
3.  Create Product B
4.  Create a repo in ProductB with label 'foo' pointed to some repo, sync it
5.  Add both 'foo' repos to a content view and publish it
6.  run foreman-rake content prepare
7.  run foreman-rake content migration-stats

notice that not all repos are migrated