sysrepo: Persist module installation

I have no idea how come that this has worked before -- perhaps only
because the default config which we deploy at install time matches
exactly the config of the 2018 TIP demo...

Change-Id: I9e8bbc4d3ce310f385b0f4534f20290449e16bbe
Bug: https://tree.taiga.io/project/jktjkt-czechlight/issue/822
diff --git a/package/cla-sysrepo/cla-install-yang.service.in b/package/cla-sysrepo/cla-install-yang.service.in
index c3df8ea..34b67c8 100644
--- a/package/cla-sysrepo/cla-install-yang.service.in
+++ b/package/cla-sysrepo/cla-install-yang.service.in
@@ -10,6 +10,7 @@
 ExecStart=/usr/bin/sysrepoctl --install --yang /usr/share/cla-sysrepo/yang/__YANG__.yang
 ExecStart=/usr/bin/sysrepoctl --module __YANG__ --feature-enable __FEATURE__
 ExecStart=/usr/bin/sysrepocfg --datastore=startup --import=/usr/share/cla-sysrepo/yang/__MODEL__.json __YANG__
+ExecStart=/bin/cp -a /etc/sysrepo /cfg/etc/
 
 [Install]
 WantedBy=multi-user.target