CA Certificates for Docker containers

[daniel-ng]

I think it might be worth added the 'certificates' if-condition to all of the collectors' property-builder scripts so that someone doesn't have to go in and manually add that block and the env variable in the Dockerfile. Will create a PR when I get a chance to.

[rvema]

@daniel-ng We value your contributions back to this open source project

[Sbrenthughes]

Any update @daniel-ng ?