conformance: Add additional path matching edge cases

- trailing slash on path prefix should match
- path prefixes are path segment matches not string prefix matches
- test to ensure a path containing the prefix is not matched

Signed-off-by: Sunjay Bhatia <sunjayb@vmware.com>

conformance/tests/httproute-matching.go

@@ -64,6 +64,19 @@ var HTTPRouteMatching = suite.ConformanceTest{
 			Request:   http.Request{Path: "/", Headers: map[string]string{"Version": "two"}},
 			Backend:   "infra-backend-v2",
 			Namespace: ns,
+		}, {
+			Request:   http.Request{Path: "/v2/"},
+			Backend:   "infra-backend-v2",
+			Namespace: ns,
+		}, {
+			// Not a path segment prefix so should not match /v2.
+			Request:   http.Request{Path: "/v2example"},
+			Backend:   "infra-backend-v1",
+			Namespace: ns,
+		}, {
+			Request:   http.Request{Path: "/foo/v2/example"},
+			Backend:   "infra-backend-v1",
+			Namespace: ns,
 		}}
 
 		for i := range testCases {