fix(nemesis_publisher): protect when 'scylla-server' not in stats
fix(nemesis_publisher): protect when 'scylla-server' not in stats

i'm not sure why, but saw on some 4.5 jobs (and on my master
jobs while i'm developing changes around scylla version)
errors such:
```
Traceback (most recent call last):
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 2963, in wrapper
result = method(*args, **kwargs)
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 3932, in disrupt
self.call_next_nemesis()
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 1160, in call_next_nemesis
self.execute_disrupt_method(disrupt_method=self.disruptions_list.pop())
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 1129, in execute_disrupt_method
disrupt_method()
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 1547, in disrupt_delete_by_rows_range
self.verify_initial_inputs_for_delete_nemesis()
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 1403, in verify_initial_inputs_for_delete_nemesis
raise UnsupportedNemesis("This nemesis can run on scylla_bench test only")
sdcm.nemesis.UnsupportedNemesis: This nemesis can run on scylla_bench test only
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/sct_events/decorators.py", line 26, in wrapper
return func(*args, **kwargs)
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 273, in run
self.disrupt()
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 2992, in wrapper
args[0].update_stats(disrupt, status, log_info)
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis.py", line 193, in update_stats
self.es_publisher.publish(disrupt_name=disrupt, status=status, data=data)
File "/jenkins/slave/workspace/scylla-4.5/longevity/longevity-10gb-3h-gce-test\
	/scylla-cluster-tests/sdcm/nemesis_publisher.py", line 54, in publish
scylla_version=test_data['versions']['scylla-server']['version'],
KeyError: 'scylla-server'
```

this fix will try few options when the key not in stats dictionary.

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