Don't think this works. `CloudStackTemplateOptions.getSecurityGroups` is ignored by `CloudStackComputeServiceAdapter`, which instead uses `getSecurityGroupIds`. We (or someone) should fix jclouds so that it respects the security group names (doing a look up to find the corresponding security group ids if necessary). But until that's available for us, then this code won't do anything.

Setting `((CloudStackTemplateOptions)t).securityGroupIds(...)` would at least be functionally useful, even if confusing that one has to use the ids.