spl-linux 0.6.5.11-1 ADT test failure with linux 4.13.0-2.3 [error: positional initialization of field in ‘struct’ declared with ‘designated_init’ attribute [-Werror=designated-init]]

[Seth Forshee]

Testing failed on:
    amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful-canonical-kernel-team-bootstrap/artful/amd64/s/spl-linux/20170725_182242_7bb88@/log.gz
    i386: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful-canonical-kernel-team-bootstrap/artful/i386/s/spl-linux/20170725_181357_7bb88@/log.gz
    ppc64el: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful-canonical-kernel-team-bootstrap/artful/ppc64el/s/spl-linux/20170725_161024_7bb88@/log.gz