Fix typo in Dockerfile
Fix typo in Dockerfile

Change-Id: I9ee40dcfd815997d5ebd126e690c5f2b54af3364
Signed-off-by: jose.lausuch <a4ed9890ad7f6494ac84a749f29a4dc3449a1186@ericsson.com>

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