Moved checker to a property in Tool, also added a boolean

src/main/resources/swagger/ga4gh-tool-discovery.yaml

@@ -507,6 +507,15 @@ definitions:
         type: array
         items:
           type: string
+      has_checker:
+        type: boolean
+        description: >-
+          Whether this tool has a checker tool associated with it
+      checker_url:
+        type: string
+        description: >-
+          Optional url to the checker tool that will exit successfully if this
+          tool produced the expected result given test data.
       verified:
         type: boolean
         description: >-
@@ -628,11 +637,6 @@ definitions:
           Optional url to the test JSON used to test this tool. Note that this
           URL should resolve to the raw unwrapped content that would otherwise
           be available in test.
-      test_tool_url:
-        type: string
-        description: >-
-          Optional url to the test workflow that will exit successfully if this
-          workflow produced the expected result given this test data.
   ToolContainerfile:
     type: object
     description: >-