Variables in config files

Hi all:

I have some values repeated all over the configuration (in prometheus.yml) like this:

- job_name: 'blackbox-http'
  scrape_interval: 2m

- job_name: 'blackbox-http-15m'
  scrape_interval: 2m

- job_name: 'blackbox-http-check-redirect'
  scrape_interval: 2m

Is there any way I could create a constant or variable called “my_interval = 2m”? This way, I can adjust the value in just one place for all variants.

Thanks in advance,
rdiez