Upgrade fake endorsements to use claims rather than the usage field, … #627

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	16m 50s
build_attest_all (buildconfigs/oak_client_android_app.sh)	49m 8s
build_attest_all (buildconfigs/oak_containers_agent.sh)	9m 46s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	31m 16s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	24m 56s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	22m 57s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	22m 56s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	25m 4s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	26m 31s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	16m 10s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	16m 10s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	16m 28s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	17m 22s
build_attest_all (buildconfigs/oak_orchestrator.sh)	16m 10s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	42m 31s
build_attest_all (buildconfigs/stage0_bin.sh)	42m 23s
build_attest_all (buildconfigs/stage0_bin_tdx.sh)	40m 37s
	7h 17m 15s

Provide feedback