Add createSite feature so user can disable site creation #813 (#814) #1622

Job	Run time
build_and_test (3.9, 18.x, :lint:python:client:common:smoke:)	4m 18s
build_and_test (3.9, 18.x, :server-1-of-2:)	11m 17s
build_and_test (3.9, 18.x, :server-2-of-2:)	11m 18s
build_and_test (3.9, 18.x, :nbrowser-^[A-G]:)	9m 44s
build_and_test (3.9, 18.x, :nbrowser-^[H-L]:)	3m 52s
build_and_test (3.9, 18.x, :nbrowser-^[M-O]:)	11m 9s
build_and_test (3.9, 18.x, :nbrowser-^[P-S]:)	6m 12s
build_and_test (3.9, 18.x, :nbrowser-^[^A-S]:)	4m 19s
build_and_test (:lint:python:client:common:smoke:, 18.x, 3.10)	4m 7s
build_and_test (:lint:python:client:common:smoke:, 18.x, 3.11)	4m 9s
candidate	6s
	1h 10m 31s

Provide feedback