Add NoopSuggester for disabling Elasticsearch autocomplete #2977

Job	Run time
env-protect-setup	6s
authorize	4s
get-dev-image / get-image	8s
clang-tidy	43s
generate-matrix	2m 38s
code-coverage	0s
build-and-test (Clang opt + UI, nokvm, --config=clang --compilation_mode=opt, bazel_buildables_cl...	3m 31s
build-and-test (Go race detector, nokvm, --config=go_race --compilation_mode=opt, bazel_buildable...	3m 28s
build-and-test-status	3s
	10m 41s

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