Implement no-state sequence testing mode

[grafnu]

No description provided.

[noursaidi]

NPE if testing is undefined

2023-10-13T07:53:41Z NOTICE starting test pointset_publish ################################
2023-10-13T07:53:41Z INFO stage start waiting for starting test wrapper at 0s
2023-10-13T07:53:49Z NOTICE RESULT fail pointset pointset_publish BETA 5 There were 2 errors:   java.lang.NullPointerException(Cannot read field "nostate" because "com.google.daq.mqtt.sequencer.SequenceBase.deviceMetadata.testing" is null)   java.lang.NullPointerException(Cannot read field "nostate" because "com.google.daq.mqtt.sequencer.SequenceBase.deviceMetadata.testing" is null)
2023-10-13T07:53:49Z ERROR There were 2 errors:   java.lang.NullPointerException(Cannot read field "nostate" because "com.google.daq.mqtt.sequencer.SequenceBase.deviceMetadata.testing" is null)   java.lang.NullPointerException(Cannot read field "nostate" because "com.google.daq.mqtt.sequencer.SequenceBase.deviceMetadata.testing" is null)