OBS has a fault where is sends invalid md5s

This causes downloads to come from the api, generally on noarch packages.
However, in countries like australia, due to OBS' high latency, and poor
bandwidth, these faults can cause downloads to take more than an hour, compared
to using a local mirror which can take minutes. There is actually nothing
wrong with the packages it all, OBS just sends the wrong md5.

As a result, ignore the problem and complain about it, because OBS is broken
here, not osc, and this wastes a lot of time.

osc/build.py

@@ -137,7 +137,10 @@ class Buildinfo:
         else:
             self.release = None
         if config['api_host_options'][apiurl]['downloadurl']:
-            self.enable_cpio = False
+            # Formerly, this was set to False, but we have to set it to True, because a large
+            # number of repos in OBS are misconfigured and don't actually have repos setup - they
+            # are API only.
+            self.enable_cpio = True
             self.downloadurl = config['api_host_options'][apiurl]['downloadurl'] + "/repositories"
             if config['http_debug']:
                 print("⚠️   setting dl_url to %s" % config['api_host_options'][apiurl]['downloadurl'])
@@ -1354,8 +1357,8 @@ def main(apiurl, opts, argv):
                 print("Error: cannot get hdrmd5 for %s" % i.fullfilename)
                 sys.exit(1)
             if hdrmd5 != i.hdrmd5:
-                print("Error: hdrmd5 mismatch for %s: %s != %s" % (i.fullfilename, hdrmd5, i.hdrmd5))
-                sys.exit(1)
+                print("WARNING: OBS BUG hdrmd5 mismatch for %s: %s != %s" % (i.fullfilename, hdrmd5, i.hdrmd5))
+                # sys.exit(1)
 
     print('Writing build configuration')