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sephe
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2016-03-01T02:07:14.451018Z
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MFC [Hyper-V]: r296028

hyperv: Wait 5 seconds for hyperv result, instead of 500ms

This addresses various devices (network, stoarge) attach failure.

Approved by:	re (gjb)
Reported by:    Hongxiong Xian <v-hoxian microsoft com>
Tested by:      Hongxiong Xian <v-hoxian microsoft com>
Sponsored by:   Microsoft OSTC
Differential Revision:  https://reviews.freebsd.org/D5435

END