As a plugin developer you can use this plugin as dependency of your plugin by adding a dependency tag to your POM.
To add the latest version of this plugin as a maven dependency, use the following:
<dependency>
<groupId>org.jenkins-ci.plugins</groupId>
<artifactId>ec2</artifactId>
<version>1628.v6d7b_fc58b_a_1d</version>
</dependency>