Delete Chef client and node on cleanup

This fixes #1253 by shelling out to `knife` on cleanup, as per
@mitchellh's suggestion in #1255
Show node name in logging
Suppress knife output
Allow non privileged user vagrant to run a shell provision
add basic pld linux support

PLD Linux Distribution: https://www.pld-linux.org/
Merge pull request #1490 from glensc/pld-distro

add basic pld linux support
Update CHANGELOG
v1.1.3
Default forward port adapter for VirtualBox should be 1
v1.1.4
Up version for development
Proper error message if invalid provisioner is used [GH-1515]
Better detect SSh connections closing
Don't error if machine shuts down really quickly on graceful [GH-1505]
Error message if private key not owned by right user [GH-1503]
Don't load plugins.json plugins in Bundler env
Better plugin dev experience through warnings
More comprehensive synced folder validation [GH-1499]
Don't error too early when config.vm.box is not properly set
Human friendly error on exit code 126 from VBoxManage