[master] truncate logged rdata if too long

3490.	[bug]		When logging RDATA during update, truncate if it's
                        too long. [RT #32365]

cherry picked from:
        commit 16ddb566e5a5b57bf925adef2b5543dddc1de49b
        commit cd97e0c23b09f38aac49aabab66ee13c68b7a3f3
        commit d087fa982649c081d58c5bb16e63da3428e2b89d
        commit d0795bdffef57612dd7654ffd09c9f4216eee2c8

bin/tests/system/nsupdate/tests.sh

@@ -552,5 +552,17 @@ if [ $ret -ne 0 ]; then
     status=1
 fi
 
+n=`expr $n + 1`
+ret=0
+echo "I:add a record which is truncated when logged. ($n)"
+$NSUPDATE verylarge || ret=1
+$DIG +tcp @10.53.0.1 -p 5300 txt txt.update.nil > dig.out.ns1.test$n
+grep "ANSWER: 1," dig.out.ns1.test$n > /dev/null || ret=1
+grep "adding an RR at 'txt.update.nil' TXT .* \[TRUNCATED\]"  ns1/named.run > /dev/null || ret=1
+if [ $ret -ne 0 ]; then
+    echo "I:failed"
+    status=1
+fi
+
 echo "I:exit status: $status"
 exit $status