Merge branch '3.6-dev' into ryan/aliased-client #2227

Job	Run time
smoke	3m 11s
gremlin-server unified	23m 27s
mvn clean install - jdk11	16m 36s
gremlin-console	5m 39s
gremlin-server default	24m 35s
cache gremlin-server docker image	1m 53s
mvn clean install - jdk8	9m 19s
neo4j-gremlin	8m 25s
spark core (ubuntu-latest)	12m 10s
spark core (windows-latest)	3m 13s
spark gryo (ubuntu-latest)	9m 25s
spark gryo (windows-latest)	3m 34s
.NET	7m 43s
javascript (ubuntu-latest)	5m 36s
gremlin-driver	3m 40s
go	6m 10s
python	5m 50s
	2h 30m 26s

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