K 10
svn:author
V 4
ngie
K 8
svn:date
V 27
2017-04-21T07:38:30.942056Z
K 7
svn:log
V 376
Fix utils/datetime_test:timestamp__subtraction

Don't expect a negative time delta to throw an exception--instead, expect
1 microsecond to be returned per the behavior change made in r436312.

Approved by:	brooks (as part of a larger diff), (maintainer timeout)
Differential Revision:	D10316
PR:		217973
Reported by:	Jenkins
Reviewed by:	asomers
Sponsored by:	Dell EMC Isilon

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