[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/src/xos-tosca-config-schema.yaml b/src/xos-tosca-config-schema.yaml
index db68a43..281bf77 100644
--- a/src/xos-tosca-config-schema.yaml
+++ b/src/xos-tosca-config-schema.yaml
@@ -1,4 +1,4 @@
-
+---
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,16 +13,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 map:
   name:
     type: str
-    required: True
+    required: true
   gprc_endpoint:
     type: str
-    required: True
+    required: true
   local_cert:
     type: str
-    required: True
+    required: true
   logging:
     type: any