The configuration above does work!
I had to restart my shell then re-build my project. I do get a deprecation warning on start and stop of the container, but that's a small worry.
[INFO] Building war: D:\workspaces\alstom-grid\Projects\SPP\SPP-MUI\spp-im-mui-ws\target\spp-im-mui-ws-1.0-SNAPSHOT.war
[INFO]
[INFO] --- cargo-maven2-plugin:1.3.1:start (start-container) @ spp-im-mui-ws ---
[WARNING] The <deployables> element under the <deployer> element is deprecated. Please use <deployables> under the plugin <configuration> instead.
[WARNING] The <deployables> element under the <deployer> element is deprecated. Please use <deployables> under the plugin <configuration> instead.
[WARNING] The <deployables> element under the <deployer> element is deprecated. Please use <deployables> under the plugin <configuration> instead.
[INFO]
[INFO] --- maven-failsafe-plugin:2.12.4:integration-test (default) @ spp-im-mui-ws ---
[INFO] Failsafe report directory: D:\workspaces\alstom-grid\Projects\SPP\SPP-MUI\spp-im-mui-ws\target\failsafe-reports
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running org.spp.im.mui.jaxws.client.test.VirtualWebServiceClientITCase
Tests run: 1, Failures: 0, Errors: 0, Skipped: 1, Time elapsed: 0.032 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 1
[INFO]
[INFO] --- cargo-maven2-plugin:1.3.1:stop (stop-container) @ spp-im-mui-ws ---
[WARNING] The <deployables> element under the <deployer> element is deprecated. Please use <deployables> under the plugin <configuration> instead.
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) @ spp-im-mui-ws ---
[INFO] Installing D:\workspaces\alstom-grid\Projects\SPP\SPP-MUI\spp-im-mui-ws\target\spp-im-mui-ws-1.0-SNAPSHOT.war to C:\.m2\repository\org\spp\im\mui\spp-im-mui-ws\1.0-SNAPSHOT\spp-im-mui-ws-1.0-SNAPSHOT.war
[INFO] Installing D:\workspaces\alstom-grid\Projects\SPP\SPP-MUI\spp-im-mui-ws\pom.xml to C:\.m2\repository\org\spp\im\mui\spp-im-mui-ws\1.0-SNAPSHOT\spp-im-mui-ws-1.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1:16.016s
[INFO] Finished at: Wed Nov 28 11:51:39 PST 2012
[INFO] Final Memory: 14M/256M
[INFO] ------------------------------------------------------------------------