configurations {
    deployerJars
}
dependencies {
    ...
    deployerJars  'org.apache.maven.wagon:wagon-ssh:2.2+'
}

uploadArchives {
    repositories {
        mavenDeployer {
            configuration = configurations.deployerJars
            repository(url: "scp://{server}/var/www/maven") {
                authentication(userName: "myUsername", password: "myPassword")
            }
            pom.version = '0.1.0'
            pom.groupId = 'com.mycompany'
            pom.artifactId = 'mylib'

        }
    }
}