Add NACM rules

NACM completely bypasses sysrepo permissions, so some rules need to be
set up. Now that the default shell for non-root users is netconf-cli, we
can completely forget about the sysrepo permissions, and only focus on
NACM. The default configuration for everyone is to allow reading and
disallow writing of everything. This patch changes this to allow root to
do anything and also allow the dwdm user to manipulate a subset of
installed modules.

Change-Id: Ifbb18957ba8a692b4a34ba37dba666b60819a2e6
diff --git a/package/velia/velia-system.service b/package/velia/velia-system.service
index 57a9a40..cd8db60 100644
--- a/package/velia/velia-system.service
+++ b/package/velia/velia-system.service
@@ -1,9 +1,9 @@
 [Unit]
 Description=System management via sysrepo
-After=syslog.target network.target czechlight-install-yang.service cfg-restore-sysrepo.service
+After=syslog.target network.target czechlight-install-yang.service cfg-restore-sysrepo.service nacm-restore.service
 Before=rauc-mark-good.service
 PartOf=netopeer2.service
-Requires=czechlight-install-yang.service cfg-restore-sysrepo.service
+Requires=czechlight-install-yang.service cfg-restore-sysrepo.service nacm-restore.service
 ConditionKernelCommandLine=czechlight
 
 [Service]