Fix messages with new_size variables in logical_volume/lvm.rb
Fix Issue 14718 and 17920

Code as provided by Sander Hollaar in http://projects.puppetlabs.com/issues/14718
Problem is also described in http://projects.puppetlabs.com/issues/17920
new fact: lvm_support, and related rspec test suite
Fix failed tests
Fix some things as per @adrienthebo's comments:

  * Put Facter::Util::Resolution.exec inside setcode block when
    possible
  * Use true/nil instead of yes/no
  * Use each_with_index
  * Move doc before each fact declaration
Merge pull request #27 from raphink/messages

Fix messages with new_size variables in logical_volume/lvm.rb
Merge pull request #28 from raskas/master

Feature/14718: size 'undef' doesn't work when creating a new logical volume
adding support for lvcreate -l argument (extents)
adding tests and fixing the extents validation regex
Merge branch 'pull-31'

This closes GH-31
Merge pull request #25 from raphink/up_lvm_support_fact

Add lvm_support fact
Merge pull request #1 from puppetlabs/master

Pulling latest changes