improvement(logcollector): make tar.gz archives instead of zip ones
improvement(logcollector): make tar.gz archives instead of zip ones

Zip does per-file compression and tar does it per-dir.
And we compress directories with lots of files then upload it to S3.

Compression example of the same K8S logs set:
- 36Mb using zip
- 2.9Mb using tar.gz

So, make our 'logcollector' compress files using 'tar' and not 'zip'
to be able to reduce the used S3 storage and reduce download time
significantly.

scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests