This test frequently fails on Windows RS1 (mainly), so skipping it
for now on Windows;
```
ok github.com/docker/docker/daemon/logger 0.525s coverage: 43.0% of statements
time="2019-09-09T20:37:35Z" level=info msg="Trying to get region from EC2 Metadata"
time="2019-09-09T20:37:36Z" level=info msg="Log stream already exists" errorCode=ResourceAlreadyExistsException logGroupName= logStreamName= message= origError="<nil>"
--- FAIL: TestLogBlocking (0.02s)
cloudwatchlogs_test.go:313: Expected to be able to read from stream.messages but was unable to
time="2019-09-09T20:37:36Z" level=error msg=Error
time="2019-09-09T20:37:36Z" level=error msg="Failed to put log events" errorCode=InvalidSequenceTokenException logGroupName=groupName logStreamName=streamName message="use token token" origError="<nil>"
time="2019-09-09T20:37:36Z" level=error msg="Failed to put log events" errorCode=DataAlreadyAcceptedException logGroupName=groupName logStreamName=streamName message="use token token" origError="<nil>"
time="2019-09-09T20:37:36Z" level=info msg="Data already accepted, ignoring error" errorCode=DataAlreadyAcceptedException logGroupName=groupName logStreamName=streamName message="use token token"
FAIL
coverage: 78.2% of statements
FAIL github.com/docker/docker/daemon/logger/awslogs 0.630s
```
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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