[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/loader/tosca-loader.sh b/loader/tosca-loader.sh
index 9f27a8b..dfd8e82 100755
--- a/loader/tosca-loader.sh
+++ b/loader/tosca-loader.sh
@@ -21,11 +21,12 @@
 
 for recipe in /opt/tosca/*
 do
-  echo "Loading: $recipe"
+  echo "Loading: $recipe, started at $(date -u '+%Y%m%d%H%M%SZ')"
   http --check-status --ignore-stdin \
        POST "http://xos-tosca:$XOS_TOSCA_SERVICE_PORT/run" \
        "xos-username:$XOS_USER" \
        "xos-password:$XOS_PASSWD" \
        "@$recipe" || exit 1
   echo ''
+  echo "Finished loading at $(date -u '+%Y%m%d%H%M%SZ')"
 done