Merge lp:~raharper/curtin/trunk.vmtest-remove-disks-warning into lp:~curtin-dev/curtin/trunk

[Ryan Harper]

Rephrase disk tar option output to be less scary

In the case where a test has passed and there are no disks to tar up we
logged an 'error' however in that case it wasn't really an error.
This branch changes that message to a debug level bit of information.

[Server Team CI bot (server-team-bot)]

PASSED: Continuous integration, rev:533
https://jenkins.ubuntu.com/server/job/curtin-ci/652/
Executed test runs:
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-amd64/652
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-arm64/652
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-ppc64el/652
    SUCCESS: https://jenkins.ubuntu.com/server/job/curtin-ci/nodes=metal-s390x/652

Click here to trigger a rebuild:
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review: Approve (continuous-integration)

[Scott Moser (smoser)]

looks good.

review: Approve

=== modified file 'tests/vmtests/__init__.py'
--- tests/vmtests/__init__.py	2017-10-05 19:38:25 +0000
+++ tests/vmtests/__init__.py	2017-10-11 14:27:39 +0000
@@ -1459,7 +1459,7 @@
         logger.info('Taring %s disks sparsely to %s', len(disks), outfile)
         util.subp(cmd, capture=True)
     else:
-        logger.error('Failed to find "disks" dir under tmpdir: %s', tmpdir)
+        logger.debug('No "disks" dir found in tmpdir: %s', tmpdir)
 
 
 def boot_log_wrap(name, func, cmd, console_log, timeout, purpose):