Configure credentials for Bamboo or at least one of the Maven builders so you can deploy snapshots to Nexus

I'd like to deploy my Maven-built project artifacts (TYNAMO, SWIZZLE) to Nexus via http instead of deploying to ci.repository.codehaus.org via file protocol. This should be useful for other projects as well. It'd probably be best to create one snapshot deployment account on Nexus that all Maven jobs on Bamboo can use. Credentials need to be configured in settings.xml available to the builders and match with the repository ids given in Codehaus' common parent pom (see http://repo2.maven.org/maven2/org/codehaus/codehaus-parent/1/codehaus-parent-1.pom). The following issues are related: http://jira.codehaus.org/browse/HAUS-1784 (if Bamboo isn't yet using Nexus as a proxy it should), http://jira.codehaus.org/browse/HAUS-1975 (is there a general issues with Bamboo?) and http://jira.codehaus.org/browse/HAUS-1845 (probably could be made invalid).