repos: Consider checkinstall, too

Some checkinstall packages (like rpminstall-tests-checkinstall)
have large dependencies that affect ability to build package
when install checks are enabled.

repos_cmp/repos.py

@@ -135,6 +135,10 @@ class Binary:
             self.name, self.epoch, self.version, self.release)
 
 
+# consider this repository components by default
+DEFAULT_COMPONENTS = ('classic', 'checkinstall')
+
+
 class Repository:
 
     def __init__(self, repo_name, sources, binaries, bits):
@@ -159,7 +163,7 @@ class Repository:
         self.reverse_prov = dict(rprov)
 
     @classmethod
-    def load(cls, repo_name, path, arch, components=('classic',)):
+    def load(cls, repo_name, path, arch, components=DEFAULT_COMPONENTS):
         src_list, bin_list = lists.read_pkglist_heders_for_repo(
             path, arch, components)
         # xxx: not the very best heuristics