NUTCH-2799 Add .asf.yaml file - update pull request template regarding Jira linking:   issue id should be in square brackets (`[NUTCH-XXXX]`)
NUTCH-2799 Add .asf.yaml file
- update pull request template regarding Jira linking:
  issue id should be in square brackets (`[NUTCH-XXXX]`)

commoncrawl/nutch,commoncrawl/nutch,commoncrawl/nutch,commoncrawl/nutch