As of https://github.com/kubernetes/kubernetes/pull/72831, the minimum
docker version is 1.13.1. (and the minimum API version is 1.26). The
only time the `RuntimeAdmitHandler` returns anything other than accept
is when the Docker API version < 1.24. In other words, we can be
confident that Docker will always support sysctl.
As a result, we can delete this unnecessary and docker-specific code.
Skips IPv6 tests on Windows.
Skips sysctl tests on Windows.
Skips network policy tests on Windows.
Skips RunAsUser / FSGroup / file permissions related tests, as those are
not supported on Windows.
Skips the test "should preserve source pod IP for traffic thru service cluster IP"
on Windows, as it creates a Pod with HostNetwork=true, which is unsupported.
What works and what doesn't work on Windows has been documented here:
https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/conformance-tests.md#windows--linux-considerations
The following tests are not tagged because they are not really run in
node e2e suites:
* A subset of host path tests that required SSH access
- should evaluate whether the tests should be moved to test/e2e_node
* GCP volume tests
- should evaluate whether these tests should be moved out of the
common directly since they are not shared with the node e2e suite.
