conformance: Added bpf-hostlegacyrouting option #205

Job	Run time
setup-and-test (1.16.5, v1.8.4, Vanilla, false, true, false, true, true, kubernetes, true, false,...	23m 3s
setup-and-test (1.16.5, v1.7.7, Vanilla, false, true, false, true, true, kubernetes, true, false,...	20m 12s
setup-and-test (1.15.12, v1.8.4, Vanilla, false, true, false, true, true, kubernetes, true, false...	20m 17s
setup-and-test (1.15.12, v1.7.7, Vanilla, false, true, false, true, true, kubernetes, true, false...	23m 11s
setup-and-test (1.14.18, v1.8.4, Vanilla, false, true, false, true, true, kubernetes, true, false...	24m 8s
setup-and-test (1.14.18, v1.7.7, Vanilla, false, true, false, true, true, kubernetes, true, false...	25m 20s
	2h 16m 11s

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