Allow ExpectedManifest to work with a real node
Bug 945222 - Update web-platform-tests expected data to revision 3707b6ee44cf1afe049d83cd3e777957d3906037

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rename : testing/web-platform-tests/metadata/old-tests/submission/Infraware/Offline_Application_Cache/api_update_error.html.ini => testing/web-platform-tests/metadata/html/browsers/offline/application-cache-api/api_update_error.html.ini
rename : testing/web-platform-tests/metadata/shadow-dom/shadow-trees/distributed-pseudo-element/test-001.html.ini => testing/web-platform-tests/metadata/shadow-dom/shadow-trees/content-pseudo-element/test-001.html.ini
rename : testing/web-platform-tests/metadata/shadow-dom/shadow-trees/distributed-pseudo-element/test-002.html.ini => testing/web-platform-tests/metadata/shadow-dom/shadow-trees/content-pseudo-element/test-002.html.ini