test: Fix call to SetPolicyEnforcement()
test: Fix call to SetPolicyEnforcement()

SetPolicyEnforcement() doesn't attempts to wait for policy to be
enforced, and returns a result.  This test wasn't checking the result
for success, and wasn't waiting for endpoints to be ready afterwards.
Check the error and also check the wait for endpoints to be ready.

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

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