How do I resolve consul key using consul template?

Question

I used consul template to generate the prometheus config file, and I set a key in Consul like this:

10.20.1.162:9100 env=test group=A project=t
10.20.1.160:9100 env=test group=A project=t

I want the output to look like this:

  - targets:
    - 10.20.1.162:9100 
      labels:
        env: test
        group: A
        project: t
    - 10.20.1.162:9100 
      labels:
        env: test
        group: A
        project: t

In the example above, where we have env、 group、 project and any other labels, how can I set the template ?