ecs-gpu-init: fix unit dependencies on GPU drivers

The GPU driver functionality has split into two units, one for the
proprietary driver and one for the open one. Depending on the version
of the driver, one or both units might be present.

Update the dependencies to reflect this. Also drop the "Requires", as
the "After" ordering should be sufficient, and "Requires" will cause
a failure if the unit is not installed.

Signed-off-by: Ben Cressey <bcressey@amazon.com>

Author: bcressey

packages/ecs-gpu-init/ecs-gpu-init.service

@@ -3,8 +3,7 @@ Description=Initialize ECS GPU config
 # This has to be executed after the kernel modules are loaded
 # otherwise the userspace component of the driver will fail to
 # query the /dev devices
-After=load-kernel-modules.service
-Requires=load-kernel-modules.service
+After=load-tesla-kernel-modules.service load-open-gpu-kernel-modules.service
 # Block manual interactions with this service. It doesn't
 # make sense to regenerate the GPU config file if the ECS
 # agent won't read it when it changes