Added Manifest for Listener

Added Manifest and Tests for Listener Element in server.xml. Updated the README and added an example for Tomcat 7 Instance with JMX Listener.
Added parent_server_port, fixed Attribute

Added Parameter parent_server_port to select the server element.
Allow Listener to be nested below Server, Engine, or Host elements
Clarify docs for tomcat::service

There was some confusion about whether or not this manifest would
provide an init script, so add a note in the README.
Merge pull request #63 from mhaskel/MODULES-1499

Clarify docs for tomcat::service
Merge pull request #1 from mhaskel/MODULES-1415

Allow Listener to be nested below Server, Engine, or Host elements
Merge pull request #57 from juame/MODULES-1415-ServerListener

Added Manifest for Listener
Update additional_attributes to support values with spaces

The value needs to be quoted so the augeas command works properly.
Exporting setenv.sh entries to make them operational
Rebase of #34 - export setenv entries

Make sure setenv entries have `export`, and update tests accordingly

Fixes puppetlabs/puppetlabs-tomcat#34
Merge pull request #64 from mhaskel/MODULES-1492

Update additional_attributes to support values with spaces
Merge pull request #65 from mhaskel/rebase_34

Rebase of #34 - export setenv entries
(FM-2010) Tomcat download mirrors are flaky (tests)

This refactors out download urls in the test manifests and parametrizes
them within the spec_helper_acceptance.rb to allow using internal
resources (default if ran in CI)
Add metadata summary per FM-1523
Merge pull request #68 from laurenrother/summary

Add metadata summary per FM-1523
Update for using Geppetto plugin in CI
Merge pull request #69 from justinstoller/maint/master/geppetto-update

Update for using Geppetto plugin in CI
Merge pull request #67 from justinstoller/maint/master/FM-2010_use_internal_mirrors

(FM-2010) Tomcat download mirrors are flaky (tests)
Merge branch 'master' of https://github.com/puppetlabs/puppetlabs-tomcat

* 'master' of https://github.com/puppetlabs/puppetlabs-tomcat:
  Update for using Geppetto plugin in CI
  Add metadata summary per FM-1523
  (FM-2010) Tomcat download mirrors are flaky (tests)
  Rebase of #34 - export setenv entries
  Exporting setenv.sh entries to make them operational
  Update additional_attributes to support values with spaces
  Clarify docs for tomcat::service
  Allow Listener to be nested below Server, Engine, or Host elements
  Added parent_server_port, fixed Attribute
  Added Manifest for Listener