Fixes things not fixed in #80 (#81)

Author: adriancole

package-lock.json

@@ -30,7 +30,7 @@ describe('Zipkin Http Api', () => {
     });
   });
 
-  it('/api/v1 yaml should have no swagger syntax errors', done => {
+  it('/api/v2 yaml should have no swagger syntax errors', done => {
     validateSwagger('./zipkin2-api.yaml', result => {
       expect(result.errors).toHaveLength(0);
       done();

validate.test.js

@@ -165,8 +165,15 @@ paths:
         - name: traceId
           in: path
           required: true
-          description: the 64 or 128-bit big endian, hex-encoded id of the trace as a path parameter.
           type: string
+          maxLength: 32
+          minLength: 16
+          pattern: "[a-f0-9]{16,32}"
+          description: |
+                      Trace identifier, set on all spans within it.
+
+                      Encoded as 16 or 32 lowercase hex characters corresponding to 64 or 128 bits.
+                      For example, a 128bit trace ID looks like 4e441824ec2b6a44ffdc9bb9a6453df3
         - name: raw
           in: query
           required: false

zipkin-api.yaml

@@ -159,7 +159,7 @@ paths:
           type: string
           maxLength: 32
           minLength: 16
-          pattern: "[a-z0-9]{16,32}"
+          pattern: "[a-f0-9]{16,32}"
           description: |
                       Trace identifier, set on all spans within it.
 
@@ -358,7 +358,7 @@ definitions:
         type: string
         maxLength: 32
         minLength: 16
-        pattern: "[a-z0-9]{16,32}"
+        pattern: "[a-f0-9]{16,32}"
         description: |
                     Randomly generated, unique identifier for a trace, set on all spans within it.
 
@@ -374,13 +374,13 @@ definitions:
                     For example, do not embed variables into the name.
       parentId:
         type: string
-        pattern: "[a-z0-9]{16}"
+        pattern: "[a-f0-9]{16}"
         maxLength: 16
         minLength: 16
         description: 'The parent span ID or absent if this the root span in a trace.'
       id:
         type: string
-        pattern: "[a-z0-9]{16}"
+        pattern: "[a-f0-9]{16}"
         maxLength: 16
         minLength: 16
         description: |