Description of problem:

Yum supports skip_if_unavailable option in repositories configuration. If the repository cannot be contacted for any reason, it causes Yum not to exit with an error but to continue running.


Version-Release number of selected component (if applicable):
dnf-0.2.17-1.git6a055e6.fc18.noarch

How reproducible:
always


Steps to Reproduce:
1. set up some nonexisting repository with skip_if_unavailable=1
2. dnf/yum distro-sync
3.
  
Actual results:

# dnf distro-sync
Setting up Distribution Synchronization Process
Resolving Dependencies
--> Starting dependency resolution
Could not retrieve mirrorlist http://example error was
14: curl#7 - "Couldn't connect"
Error: Cannot find a valid baseurl for repo: example
(exit)

# yum distro-sync
Loaded plugins: auto-update-debuginfo, keys, presto, remove-with-leaves, security, show-leaves
Could not retrieve mirrorlist http://example error was
14: curl#7 - "Couldn't connect"
...
No Packages marked for Distribution Synchronization


Expected results:


Additional info: