Temporarily use git source code for lvalert-overseer installation

requirements.txt

@@ -14,7 +14,9 @@ html5lib==1.0.1
 ipdb==0.10.2
 ipython==5.5.0
 ligo-lvalert==1.5.4
-ligo-lvalert-overseer==0.1.2
+# Temporary pin of overseer to git.ligo.org
+git+https://git.ligo.org/lscsoft/lvalert-overseer.git@aws_updates#egg=ligo-lvalert-overseer
+#ligo-lvalert-overseer==0.1.2
 lxml==4.2.0
 matplotlib==2.0.0
 mock==2.0.0