Ensure that the orchestrator drops the container bundle after unpacking #800

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	42m 32s
build_attest_all (buildconfigs/oak_client_android_app.sh)	47m 52s
build_attest_all (buildconfigs/oak_containers_agent.sh)	34m 14s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	33m 27s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	50m 5s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	48m 34s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	46m 35s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	48m 19s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	51m 14s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	41m 8s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	41m 26s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	42m 0s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	41m 54s
build_attest_all (buildconfigs/oak_orchestrator.sh)	40m 39s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	42m 2s
build_attest_all (buildconfigs/stage0_bin.sh)	42m 38s
build_attest_all (buildconfigs/stage0_bin_tdx.sh)	41m 19s
	12h 15m 58s

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