Address review comments

Author: jovial

roles/vgpu/defaults/main.yml

@@ -5,6 +5,9 @@ vgpu_driver_dkms: false
 vgpu_do_reboot: true
 vgpu_reboot_timeout: 3600
 
+# Time in seconds to sleep before enabling sriov on 
+vgpu_sriov_init_delay: 30
+
 # Deprecated: use vgpu_definitions instead.
 vgpu_mig_definitions: []
 vgpu_definitions: "{{ vgpu_mig_definitions }}"

roles/vgpu/templates/nvidia-sriov.service.j2

@@ -13,7 +13,7 @@ User=root
 # NOTE(wszumski): There is a race in the driver initialization where if we run
 # this too early, then the mdev_support_devices entry doesn't show up in sysfs.
 # I was unable to get this to show up again without a reboot.
-ExecStartPre=/bin/sleep 30
+ExecStartPre=/bin/sleep {{ vgpu_sriov_init_delay }}
 # NOTE(wszumski): The sriov-manage script will unbind the nvidia driver to
 # initialize the virtual functions.  If it fails part way through, the driver
 # can be left unbound, and subsequent executions of sriov-mange will fail. This