Clean up spec for unsupported tests.

Added a default nodeset pointing to centos-65-x64.yml. Removed
unsupported FOSS nodesets. Updated nodesets to point at
vagrantcloud.com.

Updated nodesets

When installing from package or running the service with `$use_init =
true`, `$catalina_home` and `$catalina_base` have no affect. Making this
more explicit by adding a note in the docs and adding warnings.

Updates for when installing from package

Add the ability to purge exploded WAR directories.

When tomcat is installed from packages (in EL), the scripts that
are run to launch tomcat do not source setenv.sh, hence the
tomcat::setenv::entry resource becomes useless for this specific
case.

In order to still be able to control tomcat instances installed
from repository, this PR creates a new resource tomcat::config::entry
that does exactly the same thing as tomcat::setenv::entry but for
default configuration file based on the OS.

Allow one to set configuration when using tomcat package.

Noticed the param name was wrong in the README

Acceptance tests for puppetlabs-tomcat module

1.0.0 prep

Fix acceptance test failures

Updates based on QA feedback.

Add PE compatibility and add notes in the README for required update of
stdlib.

Update metadata and note about stdlib