Make timeout of ManagedExplodedContentServitor configurable

The ManagedExplodedContentServitor deletes previously staged exploded managed WARs before deploying again from the repository.
This class uses a latch to wait 60 seconds before failing the deployment with a StartException.

On a Windows VM deleting an exploded WAR can take a long time, especially with Virus scanning enabled.

It would be appreciated if this timeout was either increased or configurable.

We now had to work around this issue by manually deleting the standalone/data/managed-exploded directory and its contents before booting WildFly.