WM-1491 Fixing Cromwell-client (#6943)

* More updated client for use in cbas

* Removing excess code

Author: kpierre13

docs/api/RESTAPI.md

@@ -607,7 +607,7 @@ paths:
         '400':
           $ref: '#/responses/BadRequest'
         '404':
-           description: No matching cache entry. Cromwell versions prior to 28 will not have recorded information necessary for this endpoint and thus will also appear to not exist.
+          description: No matching cache entry. Cromwell versions prior to 28 will not have recorded information necessary for this endpoint and thus will also appear to not exist.
         '500':
           $ref: '#/responses/ServerError'
   '/api/workflows/{version}/backends':
@@ -1035,10 +1035,6 @@ definitions:
         example: Submitted
   WorkflowMetadataResponse:
     description: Workflow and call level metadata
-    required:
-      - id
-      - status
-      - submission
     properties:
       id:
         type: string
@@ -1067,12 +1063,11 @@ definitions:
       calls:
         $ref: '#/definitions/CallMetadata'
       failures:
-        $ref: '#/definitions/FailureMessage'
+        type: array
+        items:
+          $ref: '#/definitions/FailureMessage'
   CallMetadata:
     description: Call level metadata
-    required:
-      - inputs
-      - executionStatus
     properties:
       inputs:
         type: object
@@ -1098,7 +1093,9 @@ definitions:
         type: string
         description: Backend-specific job ID
       failures:
-        $ref: '#/definitions/FailureMessage'
+        type: array
+        items:
+          $ref: '#/definitions/FailureMessage'
       returnCode:
         type: integer
         description: Call execution return code
@@ -1113,17 +1110,14 @@ definitions:
         description: Paths to backend specific logs for this call
   FailureMessage:
     description: Failure messages
-    required:
-      - failure
-      - timestamp
     properties:
-      failure:
+      message:
         type: string
         description: The failure message
-      timestamp:
-        type: string
-        format: date-time
-        description: The time at which this failure occurred
+      causedBy:
+        type: array
+        items:
+          $ref: '#/definitions/FailureMessage'
   WorkflowDescription:
     required:
       - valid
@@ -1212,9 +1206,9 @@ definitions:
               typeName: Pair
               pairTypes:
                 - leftType:
-                  -  typeName: Int
+                    -  typeName: Int
                 - rightType:
-                  -  typeName: String
+                    -  typeName: String
             optional: false
             default: null
             typeDisplayName: Pair[Int, String]
@@ -1959,4 +1953,3 @@ definitions:
           are also allowed. The version should be changed whenever the service
           is updated.
         example: 1.0.0
-