Update Grammar and add tests #26

Job	Run time
smoke	3m 36s
gremlin-server unified	15m 45s
mvn clean install - jdk11	30m 56s
gremlin-server default	16m 5s
cache gremlin-server docker image	2m 9s
mvn clean install - jdk17	13m 50s
mvn clean install - jdk8	8m 42s
spark core (ubuntu-latest)	13m 16s
spark gryo (ubuntu-latest)	10m 36s
spark core (windows-latest)	3m 44s
gremlin-console	6m 10s
spark gryo (windows-latest)	3m 49s
neo4j-gremlin	9m 11s
gremlin-driver	3m 50s
python	7m 34s
	2h 29m 13s

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