disallow component names not conforming to the pattern

closes #3720 and #2439.

Author: karenetheridge

src/schemas/validation/schema.yaml

@@ -140,62 +140,71 @@ definitions:
             oneOf:
               - $ref: '#/definitions/Schema'
               - $ref: '#/definitions/Reference'
+        additionalProperties: false
       responses:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/Response'
+        additionalProperties: false
       parameters:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/Parameter'
+        additionalProperties: false
       examples:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/Example'
+        additionalProperties: false
       requestBodies:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/RequestBody'
+        additionalProperties: false
       headers:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/Header'
+        additionalProperties: false
       securitySchemes:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/SecurityScheme'
+        additionalProperties: false
       links:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/Link'
+        additionalProperties: false
       callbacks:
         type: object
         patternProperties:
           '^[a-zA-Z0-9\.\-_]+$':
             oneOf:
               - $ref: '#/definitions/Reference'
               - $ref: '#/definitions/Callback'
+        additionalProperties: false
     patternProperties:
       '^x-': {}
     additionalProperties: false