gistfile1.txt

minion_watchdog:
  cloud.absent:
    - tgt: {{ grains['id'] }}
    - unless: 
      - cmd.run: /tmp/uptime_test
  require:
    - file: /tmp/uptime_test

/tmp/uptime_test:
  file.managed:
    - source: salt://minion_watchdog/uptime_test.sh
    - user: root
    - group: root
    - mode: 644
    
    
    
Source File:    
#!/bin/bash
UPTIME=$(awk '{ print $1 }' /proc/uptime | awk -F '.' '{ print $1 }')
if  [[ $UPTIME -lt 300 ]]; then exit 0;else exit 1; fi

Output:

Summary
-----------
Succeeded: 0
Failed:   0
-----------
Total states run:    0