Add namespace to user (#1021)

src/main/java/org/gitlab4j/api/models/User.java

@@ -24,6 +24,7 @@ public class User extends AbstractUser<User> {
     private Date lastSignInAt;
     private String linkedin;
     private String location;
+    private Long namespaceId;
     private String organization;
     private Boolean privateProfile;
     private Integer projectsLimit;
@@ -166,6 +167,14 @@ public class User extends AbstractUser<User> {
         this.location = location;
     }
 
+    public Long getNamespaceId() {
+        return namespaceId;
+    }
+
+    public void setNamespaceId(Long namespaceId) {
+        this.namespaceId = namespaceId;
+    }
+
     public String getOrganization() {
         return organization;
     }

src/test/resources/org/gitlab4j/api/user.json

@@ -34,5 +34,6 @@
   "external": false,
   "private_profile": false,
   "shared_runners_minutes_limit": 133,
-  "extra_shared_runners_minutes_limit": 133
+  "extra_shared_runners_minutes_limit": 133,
+  "namespace_id": 1
 }
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