Fixed mvnrepository link for this package in codegen (#200)

* Codegen bug fix

* Removed tests for generated code

* Fixed mvnrepository link for this package in codegen

Author: RJ Lohan

python/rpdk/java/templates/pom.xml

@@ -26,7 +26,7 @@
     </repositories>
 
     <dependencies>
-        <!-- https://github.com/awslabs/aws-cloudformation-rpdk-java-plugin/ -->
+	<!-- https://mvnrepository.com/artifact/software.amazon.cloudformation/aws-cloudformation-rpdk-java-plugin -->
         <dependency>
             <groupId>software.amazon.cloudformation</groupId>
             <artifactId>aws-cloudformation-rpdk-java-plugin</artifactId>