Fix integration tests

Because we've enabled the installer updates repository, we have more
repositories in our list than before. If we don't remove them from the
list with grep, the list will grow with every newly released product and
break our tests.

features/repos_spec.rb

@@ -14,6 +14,9 @@
   end
 
   it do
-    expect(`/usr/bin/rmt-cli repos list | wc -l`.strip&.to_i ).to eq(10) # 5 lines for table headers
+    # We need to remove the Installer-Updates from our list of repos because they are added by default.
+    # We cannot just keep them and change the expectation because the number will grow with every newly released product
+    # and break this test.
+    expect(`/usr/bin/rmt-cli repos list | grep -v Installer-Updates | wc -l`.strip&.to_i).to eq(10) # 5 lines for table headers
   end
 end