Add missing targets for Rust unit tests #198

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	5m 14s
build_attest_all (buildconfigs/oak_client_android_app.sh)	51m 59s
build_attest_all (buildconfigs/oak_containers_agent.sh)	7m 7s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	27m 53s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	9m 8s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	6m 57s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	7m 59s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	15m 45s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	17m 12s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	4m 55s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	4m 31s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	4m 9s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	4m 8s
build_attest_all (buildconfigs/oak_orchestrator.sh)	6m 29s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	5m 6s
build_attest_all (buildconfigs/stage0_bin.sh)	5m 19s
	3h 3m 51s

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