fix(appmesh): actually set listener healthCheck.path (#4218)

Author: Jimmy Gaussen

packages/@aws-cdk/aws-appmesh/lib/virtual-node.ts

@@ -153,7 +153,7 @@ function renderHealthCheck(hc: HealthCheck | undefined, pm: PortMapping): CfnVir
   return {
     healthyThreshold: hc.healthyThreshold || 2,
     intervalMillis: (hc.interval || cdk.Duration.seconds(5)).toMilliseconds(), // min
-    path: hc.path || hc.protocol === Protocol.HTTP ? '/' : undefined,
+    path: hc.path || (hc.protocol === Protocol.HTTP ? '/' : undefined),
     port: hc.port || pm.port,
     protocol: hc.protocol || pm.protocol,
     timeoutMillis: (hc.timeout || cdk.Duration.seconds(2)).toMilliseconds(),

packages/@aws-cdk/aws-appmesh/test/integ.mesh.expected.json

@@ -655,7 +655,7 @@
               "HealthCheck": {
                 "HealthyThreshold": 3,
                 "IntervalMillis": 5000,
-                "Path": "/",
+                "Path": "/check-path",
                 "Port": 8080,
                 "Protocol": "http",
                 "TimeoutMillis": 2000,
@@ -710,7 +710,7 @@
               "HealthCheck": {
                 "HealthyThreshold": 3,
                 "IntervalMillis": 5000,
-                "Path": "/",
+                "Path": "/check-path2",
                 "Port": 8080,
                 "Protocol": "http",
                 "TimeoutMillis": 2000,
@@ -753,7 +753,7 @@
               "HealthCheck": {
                 "HealthyThreshold": 3,
                 "IntervalMillis": 5000,
-                "Path": "/",
+                "Path": "/check-path3",
                 "Port": 8080,
                 "Protocol": "http",
                 "TimeoutMillis": 2000,