Do not raise an error if hosts file is missing, only if it is invalid (…

…#177)

* Do not raise an error if hosts file is missing, only if it is invalid

* Updated changelog

CHANGELOG.md

@@ -6,17 +6,23 @@ The format is based on [Keep a Changelog][keepachangelog],
 and this project adheres to [Semantic Versioning][semver].
 
 
+
+
 ## [Unreleased]
 
 ### Added
 
 
 ### Changed
 
+- Do not raise an error if the hosts file is missing ([177])
 
 ### Fixed
 
 
+[177]: https://github.com/openlawlibrary/taf/pull/177
+
+
 ## [0.10.0] - 07/20/2021
 
 ### Added

taf/hosts.py

@@ -139,7 +139,10 @@ def set_hosts_of_repo(auth_repo, hosts):
 def load_hosts_json(auth_repo, commit=None):
     if commit is None:
         commit = auth_repo.top_commit_of_branch(auth_repo.default_branch)
-    return _get_json_file(auth_repo, HOSTS_JSON_PATH, commit)
+    try:
+        return _get_json_file(auth_repo, HOSTS_JSON_PATH, commit)
+    except MissingHostsError:
+        return {}
 
 
 def _get_json_file(auth_repo, path, commit):