Ensure that ruby libraries was installed before running vims test-case
Ensure that ruby libraries was installed before running vims test-case

Change-Id: Ice896c37fc28e01f260cd617ee4c38d323607bb5
Signed-off-by: boucherv <92505b05743740ff7910a3d93741c58e8604a7fb@orange.com>

mywulin/functest,opnfv/functest,mywulin/functest,opnfv/functest