Need to add status check to get healthy upstream (#17)

Author: CalvinAllen

src/main/java/org/springframework/samples/petclinic/system/StatusController.java

@@ -0,0 +1,16 @@
+package org.springframework.samples.petclinic.system;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@Controller
+public class StatusController {
+	@GetMapping("/check")
+	@ResponseStatus(HttpStatus.OK)
+	public void Check() {
+		// all good
+	}
+
+}