Set display_priority in gunicorn spec.yaml based on field usage (DataDog#23275)

Author: coignetp

gunicorn/assets/configuration/spec.yaml

@@ -5,6 +5,7 @@ files:
   - template: init_config
     options:
       - name: gunicorn
+        display_priority: 0
         description: |
           Command or path to gunicorn (e.g. `/usr/local/bin/gunicorn` or `docker exec container gunicorn`)
           can be overwritten on an instance
@@ -16,6 +17,7 @@ files:
   - template: instances
     options:
     - name: proc_name
+      display_priority: 1
       required: true
       description: |
         The name of the gunicorn process. For the following gunicorn server:
@@ -27,6 +29,7 @@ files:
         type: string
       fleet_configurable: true
     - name: gunicorn
+      display_priority: 0
       description: Command or path to gunicorn (e.g. `/usr/local/bin/gunicorn` or `docker exec container gunicorn`)
       value:
         type: string