Health _chek: Instance creation operation failed

OSTF all operation related to instance creation failed by reason Multiple possible networks found, use a Network ID to be more specific
(CentOS + Neutron + Vlan simple)

requests.packages.urllib3.connectionpool: INFO: Starting new HTTP connection (1): 10.108.0.6
requests.packages.urllib3.connectionpool: DEBUG: "POST http://172.16.0.2:8774/v2/d0fd2e2d795f433981a94124f9b338aa/servers HTTP/1.1" 400 115
fuel_health.common.test_mixins: DEBUG: Multiple possible networks found, use a Network ID to be more specific. (HTTP 400) (Request-ID: req-8025f782-4f36-422a-9a6a-4d9140c3a41c)
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