Record files from one Before* method failure to same directory

[mocenas]

Change OpenShiftRecorder to store logs from single Before* method failure into same directory. Currently it generates random integer, for directory name, every time writing a file. Resulting in storing every *.log file into separate directory.

This MR generates unique identifier every time a openshift state is stored and uses it as identifier for all files.

Changes behaviour from #504

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• Pull Request contains a description of the changes
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[mocenas]

cc @mnovak1 @fabiobrz

[fabiobrz]

Thanks @mocenas! Yeah, I noticed the same behavior couple of days ago. I am approving the changes here, since they seem just correct to me, but I haven't a way to test them today.

[mnovak1]

@mocenas , LGTM and thanks for the PR.