add hostname to pid file?

**Is your feature request related to a problem? Please describe.**
It would be helpful to log the hostname of the device where a compute endpoint is started. For machines with multiple access nodes, this would be helpful to log somewhere.

**Describe the solution you'd like**
When an endpoint is started a file called `daemon.pid` is written to the endpoint directory containing the pid of the endpoint process. Could the hostname be added to this file as well (e.g. `polaris-login-02`).

**Describe alternatives you've considered**
I've looked through the logs for information on the host where an endpoint is started and it doesn't appear anywhere I can find. If I'm returning to a node/service it would be helpful to have some place to check this. Most of our systems have multiple access nodes and they rotate in and out of service.

**Additional context**