API: Add struct fields, fixes #2882

- Add CreateIndex and ModifyIndex to AgentService
- Add CreateIndex and ModifyIndex to Node

api/agent.go

@@ -25,6 +25,8 @@ type AgentService struct {
 	Port              int
 	Address           string
 	EnableTagOverride bool
+	CreateIndex       uint64
+	ModifyIndex       uint64
 }
 
 // AgentMember represents a cluster member known to the agent

api/catalog.go

@@ -6,6 +6,8 @@ type Node struct {
 	Address         string
 	TaggedAddresses map[string]string
 	Meta            map[string]string
+	CreateIndex     uint64
+	ModifyIndex     uint64
 }
 
 type CatalogService struct {