fix: Fix chectl logs before che pods start

[flacatus]

Signed-off-by: Flavius Lacatusu [email protected]

What does this PR do?

Sometimes chectl fails before Che pods start and that means there are not any logs.
This PR check if directory logs are empty and print a message.

What issues does this PR fix or reference?

https://issues.redhat.com/browse/CRW-859

[flacatus]

[dmytro-ndp]

IMHO "Installation failed, check logs in '${ctx.directory}'`)" message should be shorten if there are no logs available.

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: dmytro-ndp, flacatus, tolusha
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