Enhance 'kernel_upgrade' across supported OSes
Enhance 'kernel_upgrade' across supported OSes

kernel_upgrade currently searches for the driver
"/lib/modules/${::kernelrelease}/kernel/drivers/scsi/vmw_pvscsi.ko",
which isn't reliable on RHEL/CentOS 5. I've added some conditional
logic to search for vmxnet3.ko instead, which appears to be
universally installed regardless of distro (albeit in different
locations across the different versions of RHEL/CentOS).

craigwatson/puppet-vmwaretools,esalberg/puppet-vmwaretools,esalberg/puppet-vmwaretools,craigwatson/puppet-vmwaretools