tests: fix regression tests to run on kernels that only have network_v8

upstream kernels only have network_v8 unfortunately the tcp tests were only being run against kernels that had network (which is v7). Kernels that support both (Ubuntu) would be tested against v8, so v8 has been tested but pure upstream kernels were failing to be tested correctly.

This patch will only make sure one of the supported verserions are tested. This is determined by the parser which prefers v8. In the future the tests need to be extended to run the tests against all kernel supported versions.

Signed-off-by: John Johansen john.johansen@canonical.com