network.dpdk: Make dpdk kmod persistent

Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

linux/network/dpdk.sls

@@ -9,6 +9,7 @@ linux_dpdk_pkgs:
 linux_dpdk_kernel_module:
   kmod.present:
   - name: {{ network.dpdk.driver }}
+  - persist: true
   - require:
     - pkg: linux_dpdk_pkgs
   - require_in: