Compatibility with opensearch 2.18.0 #1469

Job	Run time
Build and Verify on Linux (ciGroup1)	32m 55s
Run functional tests on Linux (ciGroup1)	17m 57s
Build and Verify on Linux (ciGroup2)	13m 46s
Run functional tests on Linux (ciGroup2)	29m 3s
Build and Verify on Linux (ciGroup3)	23m 23s
Build min release artifacts on Linux x64	17m 29s
Run functional tests on Linux (ciGroup4)	35m 54s
Build and Verify on Linux (ciGroup4)	19m 11s
Build min release artifacts on Linux ARM64	17m 15s
Lint and validate	8m 42s
Run functional tests on Linux (ciGroup6)	17m 26s
Run functional tests on Linux (ciGroup7)	25m 44s
Run plugin functional tests on Linux	21m 12s
Run functional tests on Linux (ciGroup8)	26m 17s
Run functional tests on Linux (ciGroup9)	23m 15s
Run functional tests on Linux (ciGroup10)	28m 3s
Run functional tests on Linux (ciGroup11)	35m 32s
Run functional tests on Linux (ciGroup13)	15m 39s
Run backwards compatibility tests (osd-2.0.0)	1m 37s
Run backwards compatibility tests (osd-2.1.0)	1m 37s
Run backwards compatibility tests (osd-2.2.0)	1m 36s
Run backwards compatibility tests (osd-2.3.0)	1m 37s
Run backwards compatibility tests (osd-2.4.0)	1m 37s
Run backwards compatibility tests (osd-2.5.0)	1m 35s
Run backwards compatibility tests (osd-2.6.0)	1m 48s
Run backwards compatibility tests (osd-2.7.0)	1m 41s
Run backwards compatibility tests (osd-2.8.0)	1m 42s
Run backwards compatibility tests (osd-2.9.0)	1m 39s
	7h 5m 12s

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