spec: provide a more valid looking identity to the tests

test/basic.js

@@ -11,7 +11,7 @@ function createDefaultsTest (release) {
 
     const opts = {
       app: util.generateAppPath(release),
-      identity: 'codesign.electronjs.org'
+      identity: 'codesign.electronjs.org (T123456)'
     }; // test with no other options for self discovery
 
     waterfall(

test/ci/codesign.cnf

@@ -8,7 +8,7 @@ ST = BC
 L = Vancouver
 O = ElectronJS
 OU = BuildAutomation
-CN = codesign.electronjs.org
+CN = codesign.electronjs.org (T123456)
 
 [extended]
 keyUsage         = critical,digitalSignature