fix(systemd): consider the unit to be active

in order to not mislead the end user once the main process is gone.

Author: joelcapitao

deployments/systemd/nvidia-cdi-refresh.service

@@ -26,6 +26,7 @@ EnvironmentFile=-/etc/nvidia-container-toolkit/nvidia-cdi-refresh.env
 ExecCondition=/usr/bin/grep -qE '/nvidia.ko' /lib/modules/%v/modules.dep
 ExecStart=/usr/bin/nvidia-ctk cdi generate
 CapabilityBoundingSet=CAP_SYS_MODULE CAP_SYS_ADMIN CAP_MKNOD
+RemainAfterExit=yes
 
 [Install]
 WantedBy=multi-user.target