add custom fact to get occ status

php occ status --ansi --output=plain
  - installed: true
  - version: 18.0.1.3
  - versionstring: 18.0.1
  - edition: 

php occ status --ansi --output=json
{"installed":true,"version":"18.0.1.3","versionstring":"18.0.1","edition":""}

It is interesting to know that installed is true or no to trigger occ install command or not.