[SEBA-497]

Change to using alpine-grpc-base
Fix issue with nested exceptions causing an error in structlog
Reformat and python3 fixes, v3.5 mock support
Record execution times in the loader

Change-Id: I6d7923818d57012fca32ce44668820de422206d6
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..4b44898
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+tosca-parser~=1.4.0
+xosgenx~=3.0.5
+xosapi~=3.0.5
+klein~=17.10.0