Use absolute dir when removing vmtp src dir
Use absolute dir when removing vmtp src dir

Change-Id: I7254201f97e9615d5d34ab9c199b33ef9de3680c
Signed-off-by: Cédric Ollivier <d48310251a4a484d041bc5d09a9ac4d86d20f793@orange.com>

opnfv/functest,opnfv/functest