Set refstack_defcore criteria to 100%
Set refstack_defcore criteria to 100%

In order to be consistent with other tests, set refstack_defcore
criteria to 100%.

Change-Id: Iab8bc0cb66b834a661b860a032192d502fde578b
Signed-off-by: Linda Wang <81613bebe84fa394bbc7c5cc1c21989c9bff2c52@huawei.com>

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