examples: support retry policy example for bazel build

examples: support retry policy example for bazel build · grpc/grpc-java@58de563

Original file line number	Diff line number	Diff line change
`@@ -248,3 +248,20 @@ java_grpc_library(`
`248`	`248`	`deps = ["@io_grpc_grpc_proto//:health_java_proto"],`
`249`	`249`	`)`
`250`	`250`
	`251`	`+java_binary(`
	`252`	`+name = "retrying-hello-world-client",`
	`253`	`+testonly = 1,`
	`254`	`+main_class = "io.grpc.examples.retrying.RetryingHelloWorldClient",`
	`255`	`+runtime_deps = [`
	`256`	`+":examples",`
	`257`	`+ ],`
	`258`	`+)`
	`259`	`+`
	`260`	`+java_binary(`
	`261`	`+name = "retrying-hello-world-server",`
	`262`	`+testonly = 1,`
	`263`	`+main_class = "io.grpc.examples.retrying.RetryingHelloWorldServer",`
	`264`	`+runtime_deps = [`
	`265`	`+":examples",`
	`266`	`+ ],`
	`267`	`+)`