Changes in vimconn_vmware.py: Addressed code review changes to add raise keyword
Changes in vimconn_vmware.py: Addressed code review changes to add raise keyword

Change-Id: I3abec6cd31c591cefeb362b88177e15cca51be9e
Signed-off-by: kate <743f3e3f3d2bcc0d7bb6b77e07950f58d8331351@vmware.com>

igordcard/RO,igordcard/RO