Run the definition uploader on deploy (#76)

* Run the scan definitions uploader on deploy... should fix #75

* Invoke the Def updater lambda asynchronously.  It takes about 45 seconds and we don't need to wait for it

Co-authored-by: Mike Dial <mdial@collabralink.com>

services/uploads-scan/serverless.yml

@@ -31,6 +31,7 @@ custom:
         curl -L --output lambda_layer.zip https://github.com/CMSgov/lambda-clamav-layer/releases/download/0.5/lambda_layer.zip
       deploy:finalize: |
         rm lambda_layer.zip
+        serverless invoke --stage ${self:custom.stage} --function avDownloadDefinitions -t Event
 
   remover:
      buckets: