Add fprocess to faasd provider

This commit adds fprocess to the return values from faasd provider
/system/functions and /system/function/{name}

This has unit tests and has been tested on a faasd installation

Signed-off-by: Alistair Hey <alistair@heyal.co.uk>

pkg/provider/handlers/read.go

@@ -33,6 +33,7 @@ func MakeReadHandler(client *containerd.Client) func(w http.ResponseWriter, r *h
 				Annotations: annotations,
 				Secrets:     fn.secrets,
 				EnvVars:     fn.envVars,
+				EnvProcess:  fn.envProcess,
 			})
 		}