We need to clean the resources created in some test cases, else
in some cases we'll get below error for other tests:
> FAIL: docker_experimental_network_test.go:37: DockerNetworkSuite.TestDockerNetworkMacvlanPersistance
> docker_experimental_network_test.go:44:
> ...
> Command: ip link add dm-dummy0 type dummy
> ExitCode: 2
> Error: exit status 2
> Stdout:
> Stderr: RTNETLINK answers: File exists
> ...
Logically, each test case should be independent, the failure of previous
test case should not have side-effect for the test cases followed.
Signed-off-by: Dennis Chen <dennis.chen@arm.com>
Upstream-commit: 57d85e7e54f7d074af8c496cba43ee18d3815207
Component: engine