Hparams: Support excluding metric information in HTTP requests. #10753

Job	Run time
lint-misc	18s
build-data-server-pip (native, ubuntu-22.04, 1.65.0)	2m 25s
build-data-server-pip (native, macos-12, 1.65.0)	3m 19s
build-data-server-pip (universal, ubuntu-22.04, 1.65.0)	14s
lint-python-flake8 (3.9)	25s
lint-python-flake8 (3.10)	19s
lint-python-flake8 (3.11)	18s
lint-frontend	1m 40s
lint-python-yaml-docs	38s
lint-rust (1.65.0, 0.16.1)	44s
build (tf, 3.9)	22m 7s
build (notf, 3.9)	13m 35s
	46m 2s

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