test: Skip DatapathConfiguration tests in Flannel
test: Skip DatapathConfiguration tests in Flannel

Flannel either doesn't support these configurations, or always operates
in these configurations. The bootstrap code isn't correctly set up for
these tests to initialize flannel if the test is the first test to run,
and they provide no additional useful testing. Skip them.

Signed-off-by: Joe Stringer <16a9a54ddf4259952e3c118c763138e83693d7fd@cilium.io>

cilium/cilium,tgraf/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,tgraf/cilium,michi-covalent/cilium,cilium-team/cilium,michi-covalent/cilium,tklauser/cilium,tgraf/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,tklauser/cilium,cilium-team/cilium,tklauser/cilium,michi-covalent/cilium,tklauser/cilium