Fixed getting credentials
Fixed getting credentials

Since tempest change 290b3e138317062bd165df9eeaf17495135dfcfe
setUpClass (tempest.scenario.test_hugepages) fails
>>
File "tempest/scenario/test_hugepages.py", line 62, in setup_credentials
    credentials=cred_provider.get_configured_credentials(
AttributeError: 'module' object has no attribute 'get_configured_credentials'
>>

http://intel-openstack-ci-logs.ovh/compute-ci/refs/changes/29/247729/1/compute-nfv-flavors/tempest/scenario-on-nfv-flavors/testr_results.html

This commit should fix that.

Change-Id: I01f9b3d00e674a7cddd34ed85c3171e02eb90e97

stackforge/intel-nfv-ci-tests,openstack/intel-nfv-ci-tests,openstack/intel-nfv-ci-tests