add first bits of jinja template support

bot/utils.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+import subprocess
+from datetime import datetime
+
+import pytz
+
+
+def get_git_head_hash():
+    # get current git hash
+    x = subprocess.run(["git", "rev-parse", "HEAD"], stdout=subprocess.PIPE, universal_newlines=True)
+    if x.returncode == 0:
+        return x.stdout.replace("\n", "")
+    return None
+
+
+def utcnow() -> datetime:
+    return datetime.now(pytz.UTC)