[master] further restrict update-policy local

4762.	[func]		"update-policy local" is now restricted to updates
			from local addresses. (Previously, other addresses
			were allowed so long as updates were signed by the
			local session key.) [RT #45492]

bin/tests/system/nsupdate/setup.sh

@@ -64,3 +64,5 @@ cp ns2/sample.db.in ns2/sample.db
 
 cp -f ns1/maxjournal.db.in ns1/maxjournal.db
 rm -f ns1/maxjournal.db.jnl
+
+cp -f ns5/local.db.in ns5/local.db