How to configure path for groovy extra jar files when running tests from maven

I have added sftp functionality to a groovy script in SoapUI. This is the header of the script:
 

 
import groovy.grape.Grape;


Grape.grab(group:"com.jcraft", module:"jsch", version:"0.1.51")
Grape.grab(group:"ant", module:"ant-jsch", version:"1.6.5")

 to make it work in the SOAP UI gui I had to add some jar files  (ivy-2.4.0.jar,  jsch-0.1.51.jar, ant-jsch-1.6.5.jar, ant-1.7.0.jar) in the SoapUI-5.0.0/lib directory, then it worked fine:
 But I would also like to run the tests via maven, but I can not get it working. I have tried to add this to the dependency section in pom.xml:

<dependency>
	  <groupId>org.apache.ivy</groupId>
	  <artifactId>ivy</artifactId>
	  <version>2.4.0-rc1</version>
	</dependency>
        <dependency>
	  <groupId>com.jcraft</groupId>
	  <artifactId>jsch</artifactId>
	  <version>0.1.51</version>
	</dependency>
	<dependency>
	  <groupId>ant</groupId>
	  <artifactId>ant-jsch</artifactId>
	  <version>1.6.5</version>
	</dependency>
        <dependency>
	  <groupId>org.apache.ant</groupId>
	  <artifactId>ant</artifactId>
	  <version>1.7.0</version>
	</dependency>

But that did not work:

Any suggestions? I thought I could set a soapuiproperty to point out the directory where the jar files are located, but I do not know wich properties that should be used if this might be teh solution.

BR

Anders