BUG/MINOR: external-check: change to string

Change option external-check to string with enabled/disabled enum.

Author: mjuraga

build/haproxy_spec.yaml

@@ -274,7 +274,10 @@ definitions:
           type: array
           x-go-name: ErrorFiles
         external_check:
-          type: boolean
+          enum:
+          - enabled
+          - disabled
+          type: string
           x-display-name: External Check
         external_check_command:
           pattern: ^[^\s]+$
@@ -508,7 +511,10 @@ definitions:
         default_server:
           $ref: '#/definitions/default_server'
         external_check:
-          type: boolean
+          enum:
+          - enabled
+          - disabled
+          type: string
           x-display-name: External Check
         external_check_command:
           pattern: ^[^\s]+$

models/haproxy.yaml

@@ -138,7 +138,8 @@ defaults:
       type: integer
       x-nullable: true
     external_check:
-      type: boolean
+      type: string
+      enum: [enabled, disabled]
       x-display-name: External Check
     external_check_path:
       type: string
@@ -333,7 +334,8 @@ backend:
           type: string
           pattern: '^[^\s]+$'
     external_check:
-      type: boolean
+      type: string
+      enum: [enabled, disabled]
       x-display-name: External Check
     external_check_path:
       type: string