Fudge the environment passed to git

Change-Id: I7b1e4f2d9c747f4560745a1d1cad65317182a63b

tests/broker/brokertest.py

@@ -586,6 +586,10 @@ def gitenv(cls, env=None):
             # Some reasonable defaults...
             path = ["/bin", "/usr/bin"]
 
+        # Allow tests running in a CI environment (e.g. travis) to find local git config
+        if "HOME" not in newenv:
+            newenv["HOME"] = os.environ.get("HOME", "/home/%(USER)s" % newenv)
+
         # The 'aq' command need to run some external tools, so make sure those
         # will be found
         for exe in [sys.executable,
@@ -608,6 +612,7 @@ def gitcommand_raw(self, command, **kwargs):
             args = [command]
         args.insert(0, self.config.lookup_tool("git"))
         env = self.gitenv(kwargs.pop("env", None))
+
         p = Popen(args, stdout=PIPE, stderr=PIPE, env=env, **kwargs)
         return p