Add tests for document base URL

Base on section 2.5 URLs

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Resolve issues

1. Remove the test() from the t.step()
2. Typo
3. Split the tests into 3 tests
4. Remove the baseURL test

Signed-off-by: xiaojunwu <xiaojunx.a.wu@intel.com>
Merge pull request #472 from xiaojunwu/submission/xiaojunwu/document-base-url

Add tests for document base URL; r=denis