Merge pull request #2622 #2249

Job	Run time
smoke	2m 52s
mvn clean install - jdk8	13m 22s
cache gremlin-server docker image	1m 45s
gremlin-server default	24m 52s
mvn clean install - jdk11	16m 23s
gremlin-server unified	23m 20s
spark core (ubuntu-latest)	12m 23s
spark gryo (ubuntu-latest)	8m 54s
spark core (windows-latest)	3m 26s
gremlin-console	18m 58s
spark gryo (windows-latest)	3m 23s
neo4j-gremlin	8m 52s
python	5m 50s
.NET	5m 23s
gremlin-driver	3m 43s
go	5m 40s
javascript (ubuntu-latest)	5m 50s
	2h 44m 56s

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