As extensions options has been deprecated, API sample tests
should run against all extension enable.
This commit enables all extensions for Flavor API tests and remove its specific
extensions tests and sample files.
Partially implements blueprint api-sample-tests-with-all-extensions
Change-Id: I9fc496a6a05f794a31b0b361cc98d2f4b2f79818
microversion v2.7 was added without a functional test,
even though we can cover most cases in unit test
for negative case, it would be better to
have a functional test for a specific microversion API change.
Change-Id: I4d5576cc4ebcdeaa4e4f067fe9c6207280ad7eda