Add 'details' property to VMwareDriverException

The details property of the VimFaultException is very important and we
loose this information when we convert VimFaultException to a specific
subclass of VMwareDriverException. This patch fix this by propagating
the details to VMwareDriverException.

Change-Id: I42a50b60fc74383a2c1d9b907125ff17795ce440
Merge "Add 'details' property to VMwareDriverException"