Disable keystone v2 if keystone v3 is available
Disable keystone v2 if keystone v3 is available

Change-Id: I9ae18ac6702b6bc1df80e5ff794307929e4aefb9
Signed-off-by: Linda Wang <81613bebe84fa394bbc7c5cc1c21989c9bff2c52@huawei.com>

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