cli/addrepo: Change the distro check behaviour as in 2.2 branch

It looks for a DistributionName tag to check distro name. If it does not
exist, the check is ignored.

pisi/cli/addrepo.py

@@ -55,8 +55,16 @@ NB: We support only local files (e.g., /a/b/c) and http:// URIs at the moment
         pisi.api.remove_repo(repo)
 
     def check_distro(self, repo):
+        if not self.repodb.get_distribution(repo):
+            ctx.ui.warning(
+                _("Unable to check compatibility of this repository as "
+                  "it does not have information about the distribution."))
+            return
+
         if not self.repodb.check_distribution(repo):
-            self.warn_and_remove(_("Repository distribution does not match. Removing %s from system.") % repo, repo)
+            self.warn_and_remove(
+                _("Repository distribution does not match. "
+                  "Removing %s from system.") % repo, repo)
 
     def run(self):
 

pisi/db/repodb.py

@@ -226,12 +226,19 @@ class RepoDB(lazydb.LazyDB):
 
     def get_distribution(self, name):
         doc = self.get_repo_doc(name)
-        return doc.getTag("Distribution").getTagData("SourceName")
+        return doc.getTag("Distribution").getTagData("DistributionName")
 
     def get_distribution_release(self, name):
         doc = self.get_repo_doc(name)
         return doc.getTag("Distribution").getTagData("Version")
 
     def check_distribution(self, name):
-        return self.get_distribution(name) == ctx.config.values.general.distribution and \
-                 self.get_distribution_release(name) == ctx.config.values.general.distribution_release
+        dist_name = self.get_distribution(name)
+        dist_release = self.get_distribution_release(name)
+
+        if not dist_name:
+            # If distribution info is not available, ignore for now.
+            return True
+
+        return dist_name == ctx.config.values.general.distribution and \
+                dist_release == ctx.config.values.general.distribution_release