Provide the ability to exclude environments.

[vra5107]

Right now, a war is generated for all the directories inside src/main/environments. Having the ability to exclude some environments would make the plugin more versatile.

[khmarbaise]

The basic idea of the plugin is to be based on the directories. If you like to exclude environments just remove the appropriate directories...?

[vra5107]

Sure, but once we create src/main/environments as the directory where we store property files, we'd like to stick to that convention. i.e. that directory could also include environment directories like dev-local, qa-local, prod-local for which we don't need release wars.

In that scenario excluding those environments is the only viable option.