bump elastic stack tests to 6.2.2

[graphaelli]

Tests are failing since the update to 6.2.2 - 6.2.1-SNAPSHOT is no longer available. The kibana tests are failing too though I can't tell why - the url hit for the snapshot seems valid - should those be on 6.2.2 in the 6.2 branch anyway?

[graphaelli]

seems better than where this started - all containers are built and the tests run but just this one in FB fails:

10:56:39 ======================================================================
10:56:39 FAIL: Tests all filebeat modules
10:56:39 ----------------------------------------------------------------------
10:56:39 Traceback (most recent call last):
10:56:39   File "/go/src/github.com/elastic/beats/filebeat/tests/system/test_modules.py", line 71, in test_modules
10:56:39     cfgfile=cfgfile)
10:56:39   File "/go/src/github.com/elastic/beats/filebeat/tests/system/test_modules.py", line 151, in run_on_file
10:56:39     self._test_expected_events(module, test_file, res, objects)
10:56:39   File "/go/src/github.com/elastic/beats/filebeat/tests/system/test_modules.py", line 94, in _test_expected_events
10:56:39     ev["_source"][module], objects)
10:56:39 AssertionError: The following expected object was not found:
10:56:39  {u'slowlog': {u'took_in_millis': 3027, u'level': u'WARN', u'took_in_nanos': 3027675140.0, u'plugin_name': u'sleep', u'module': u'slowlog.logstash.filters.sleep', u'message': u'event processing time {:plugin_params=>{"time"=>3, "id"=>"e4e12a4e3082615c5427079bf4250dbfa338ebac10f8ea9912d7b98a14f56b8c"}, :took_in_nanos=>3027675106, :took_in_millis=>3027, :event=>"{\\"@version\\":\\"1\\",\\"@timestamp\\":\\"2017-10-30T13:57:55.130Z\\",\\"host\\":\\"sashimi\\",\\"sequence\\":0,\\"message\\":\\"Hello world!\\"}"}', u'plugin_params': u'{"time"=>3, "id"=>"e4e12a4e3082615c5427079bf4250dbfa338ebac10f8ea9912d7b98a14f56b8c"}', u'event': u'"{\\"@version\\":\\"1\\",\\"@timestamp\\":\\"2017-10-30T13:57:55.130Z\\",\\"host\\":\\"sashimi\\",\\"sequence\\":0,\\"message\\":\\"Hello world!\\"}"', u'plugin_type': u'filters'}}
10:56:39 Searched in: 
10:56:39 [{u'beat': {u'hostname': u'96513e2090f7', u'name': u'96513e2090f7', u'version': u'6.2.2'}, u'@timestamp': u'2017-10-30T09:57:58,243', u'read_timestamp': u'2018-02-13T15:54:41.791Z', u'fileset': {u'name': u'slowlog', u'module': u'logstash'}, u'prospector': {u'type': u'log'}, u'source': u'/go/src/github.com/elastic/beats/filebeat/module/logstash/slowlog/test/slowlog-plain.log', u'offset': 383, u'logstash': {u'slowlog': {u'took_in_millis': 3027, u'level': u'WARN', u'took_in_nanos': 3027675106, u'module': u'slowlog.logstash.filters.sleep', u'plugin_name': u'sleep', u'message': u'event processing time {:plugin_params=>{"time"=>3, "id"=>"e4e12a4e3082615c5427079bf4250dbfa338ebac10f8ea9912d7b98a14f56b8c"}, :took_in_nanos=>3027675106, :took_in_millis=>3027, :event=>"{\\"@version\\":\\"1\\",\\"@timestamp\\":\\"2017-10-30T13:57:55.130Z\\",\\"host\\":\\"sashimi\\",\\"sequence\\":0,\\"message\\":\\"Hello world!\\"}"}', u'plugin_params': u'{"time"=>3, "id"=>"e4e12a4e3082615c5427079bf4250dbfa338ebac10f8ea9912d7b98a14f56b8c"}', u'event': u'"{\\"@version\\":\\"1\\",\\"@timestamp\\":\\"2017-10-30T13:57:55.130Z\\",\\"host\\":\\"sashimi\\",\\"sequence\\":0,\\"message\\":\\"Hello world!\\"}"', u'plugin_type': u'filters'}}}]

[ph]

I will backport this #6318 this should fix the problem you are currently having.

[graphaelli]

@ph thanks! I'll rebase afterwards

[ph]

LGTM

[ph]

The failing test looks more like a timing issue I will merge this.