[test] add expect tests for ipmaddr, neighbor, leaderdata (#5097)

tests/scripts/expect/cli-misc.exp

@@ -27,11 +27,19 @@
 #  POSSIBILITY OF SUCH DAMAGE.
 #
 
-spawn $env(OT_COMMAND) 1
+source "tests/scripts/expect/_multinode.exp"
+
 set timeout 1
-expect_after {
-    timeout { exit 1 }
-}
+setup_nodes
+set spawn_id $spawn_1
+
+send "leaderdata\n"
+expect -re {Partition ID: \d+}
+expect -re {Weighting: \d+}
+expect -re {Data Version: \d+}
+expect -re {Stable Data Version: \d+}
+expect -re {Leader Router ID: \d+}
+expect "Done"
 
 send "help\n"
 expect "Done"
@@ -54,6 +62,8 @@ send "delaytimermin 1 2\n"
 send "counters mac 1\n"
 expect "Error 7: InvalidArgs"
 
+send "ifconfig down\n"
+expect "Done"
 send "ifconfig\n"
 expect "down"
 expect "Done"
@@ -132,3 +142,5 @@ send "route\n"
 expect "0:0:0:0::/64 s low"
 send "route remove ::/64\n"
 expect "Done"
+
+dispose_nodes