add lombok and rxjava2

pom.xml

@@ -346,6 +346,16 @@
 
     <dependencyManagement>
         <dependencies>
+            <dependency>
+                <groupId>org.projectlombok</groupId>
+                <artifactId>lombok</artifactId>
+                <version>1.16.18</version>
+            </dependency>
+            <dependency>
+                <groupId>io.reactivex.rxjava2</groupId>
+                <artifactId>rxjava</artifactId>
+                <version>2.1.6</version>
+            </dependency>
             <dependency>
                 <groupId>junit</groupId>
                 <artifactId>junit</artifactId>