The deploy(...) method of CargoContainerAdapter by default creates a new WAR
object that is passed to the redeploy(Deployable) method in the Cargo Deployer
class. In many cases this is acceptable. However, this leads a person to
override the entire method just to replace how the Deployable object is created,
which results in duplication of code.
Instead, creating the WAR should be extracted into it's own method that can be
overridden as necessary.
The patch being submitted makes the suggested changes as well as makes a change
in TomcatAdapter to take advantage of this. The TomcatWAR class is a subclass
of WAR that allows for some handling of WAR files that is specific to Tomcat.