Add name field to a rule (#116)

* Add name field to a rule

This is necessary to make a route rule a self-contained object.

* updated examples

proxy/v1/config/route_rule.proto

@@ -66,12 +66,17 @@ package istio.proxy.v1.config;
 // "reviews" service to version "v1" can be specified as follows:
 //
 //     destination: reviews.default.svc.cluster.local
+//     name: my-rule
 //     route:
 //     - tags:
 //         version: v1
 //       weight: 100
 //
 message RouteRule {
+  // REQUIRED: Route rules have unique names to allow multiple rules
+  // for the same destination, e.g. "my-rule".
+  string name = 11;
+
   // REQUIRED: Destination uniquely identifies the destination associated
   // with this routing rule.  This field is applicable for hostname-based
   // resolution for HTTP traffic as well as IP-based resolution for
@@ -130,6 +135,7 @@ message RouteRule {
 // contains a "cookie" with value "user=jason",
 //
 //     destination: ratings.default.svc.cluster.local
+//     name: my-rule
 //     match:
 //       source: reviews.default.svc.cluster.local
 //       sourceTags:
@@ -181,6 +187,7 @@ message MatchCondition {
 // "v1".
 //
 //     destination: reviews.default.svc.cluster.local
+//     name: my-rule
 //     route:
 //     - tags:
 //         version: v2
@@ -228,6 +235,7 @@ message L4MatchAttributes {
 // /v1/bookRatings provided by the bookratings service.
 //
 //     destination: ratings.default.svc.cluster.local
+//     name: my-rule
 //     match:
 //       httpHeaders:
 //         uri:
@@ -254,6 +262,7 @@ message HTTPRedirect {
 // ratings service before making the actual API call.
 //
 //     destination: ratings.default.svc.cluster.local
+//     name: my-rule
 //     match:
 //       httpHeaders:
 //         uri:
@@ -290,6 +299,7 @@ message StringMatch {
 // 10 second timeout for calls to the ratings:v1 service
 //
 //     destination: ratings.default.svc.cluster.local
+//     name: my-rule
 //     route:
 //     - tags:
 //         version: v1
@@ -320,6 +330,7 @@ message HTTPTimeout {
 // calling ratings:v1 service, with a 2s timeout per retry attempt.
 //
 //     destination: ratings.default.svc.cluster.local
+//     name: my-rule
 //     route:
 //     - tags:
 //         version: v1