Fix test cases:
ip-neigh-sanity-test: no failed item after delete/flush
ip-rule-sanity-test: fix invalid tos
ip-l2tp-sanity-test: enable l2tp_* modules
ip-link-sanity-test: remove deprecated team, enable vcan module
Disable ip-fou-sanity-test as the module fou has been deprecated
Required packages:
Remove bridge-utils as deprecated
Add kernel-modules-extra
Signed-off-by: Mingyu Shi <mshi@redhat.com>