Drew Walters f8a9a471d3 Use RemoveAll to cleanup test directories
Test directories in Airship have subdirectories now, so removing them
with os.Remove() will cause tests to fail. This change updates the
cleanup logic to use os.RemoveAll() for directories with children.

Change-Id: I1e03cd0335fc1a30610e06d50a701db2b1b571c9
Signed-off-by: Drew Walters <andrew.walters@att.com>
2020-02-17 16:22:09 -06:00
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