Make the DNF minrate setting configurable when loading repos

module_build_service/config.py

@@ -689,6 +689,13 @@ class Config(object):
             "default": "master",
             "desc": "Denotes the branch used for rawhide.",
         },
+        "dnf_minrate": {
+            "type": int,
+            "default": 1024 * 100,  # 100KB
+            "desc": "The minrate configuration on a DNF repo. This configuration will cause DNF to "
+                    "timeout loading a repo if the download speed is below minrate for the "
+                    "duration of the timeout."
+        }
     }
 
     def __init__(self, conf_section_obj):

module_build_service/scheduler/default_modules.py

@@ -362,7 +362,9 @@ def _get_rpms_in_external_repo(repo_url, arches, cache_dir_name):
         canon_arch = koji.canonArch(arch)
         repo_name = "repo_{}".format(canon_arch)
         repo_arch_url = repo_url.replace("$arch", canon_arch)
-        base.repos.add_new_repo(repo_name, dnf_conf, baseurl=[repo_arch_url])
+        base.repos.add_new_repo(
+            repo_name, dnf_conf, baseurl=[repo_arch_url], minrate=conf.dnf_minrate,
+        )
 
     try:
         # Load the repos in parallel