Rename analyzer options file.

pkg/front_end/test/fasta/testing.json

 {
 "":"Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file",
 "":"for details. All rights reserved. Use of this source code is governed by a",
 "":"BSD-style license that can be found in the LICENSE.md file.",
 
   "packages": "../../../../.packages",
 
   "suites": [
 
     {
@@ skipping 113 matching lines @@
       "command-lines": [
         "--checked dart2js",
         "-cdart2js -rd8 --exclude-suite=observatory_ui",
         "-cdart2js -rd8 dart2js_extra dart2js_native"
       ]
     }
   ],
 
   "analyze": {
 
-    "options": "../../.analysis_options",
+    "options": "../../analysis_options.yaml",
 
     "uris": [
       "../../lib/src/fasta",
       "../../lib/src/fasta/analyzer",
       "../../lib/src/fasta/builder",
       "../../lib/src/fasta/dill",
       "../../lib/src/fasta/kernel",
       "../../lib/src/fasta/parser",
       "../../lib/src/fasta/scanner",
       "../../lib/src/fasta/source",
@@ skipping 10 matching lines @@
       "../../../../utils/kernel-service/kernel-service.dart",
       "../../../../tools/patch_sdk.dart"
     ],
 
     "exclude": [
       "/third_party/pkg/",
       "/pkg/analyzer/"
     ]
   }
 }