Align Docker repositories with the Docker manifest v2 schema 1 deprecation

See https://docs.docker.com/engine/deprecated/#feature-deprecation-policy: Pushing and pulling with image manifest v2 schema 1

This means Docker images with manifest v2 schema 1 are no longer supported. 

We should investigate how this is going to affect Artifactory support for Docker. 

Things to consider that we may need to do: 

1. Convert all images in Artifactory that are set up with manifest v2 schema 1 to manifest v2 schema 2 
2. Two options for images uploaded to Artifactory with manifest v2 schema 1 
   1. Block docker push requests for images with manifest v2 schema 1 with an error
   2. Convert the manifest v2 schema 1 to schema 2 as part of the deployment 

UPDATE: Docker have deprecated pushing only. Pulling will continue to be allowed.