Changed vcsrepo dependancy to 0.2.0 version

vcsrepo does not behave as expected when attempting to use ensure => latest

This has been filed as the following bug

https://tickets.puppetlabs.com/browse/MODULES-1170

Version number of module changed to reflect this as out of the box 0.0.1
would likely have issues if a user wanted this behaviour (which is
default for this module).