REGTEST: mcli/mcli_show_info: launch a 'show info' on the master CLI

This test launches a HAProxy process in master worker with 'nbproc 4'.
It sends a "show info" to the process 3 and verify that the right
process replied.

This regtest depends on the support of the master CLI for VTest.

reg-tests/mcli/mcli_show_info.vtc

@@ -0,0 +1,32 @@
+varnishtest "Show info of process 3"
+
+#REQUIRE_VERSION=1.9
+
+feature ignore_unknown_macro
+
+# Do nothing. Is there only to create s1_* macros
+server s1 {
+} -start
+
+haproxy h1 -W -conf {
+    global
+        nbproc 4
+    defaults
+        mode http
+        ${no-htx} option http-use-htx
+        timeout connect 1s
+        timeout client  1s
+        timeout server  1s
+
+    frontend myfrontend
+        bind "fd@${my_fe}"
+        default_backend test
+
+    backend test
+        server www1 ${s1_addr}:${s1_port}
+} -start
+
+haproxy h1 -mcli {
+    send "@3 show info"
+    expect ~ ".*\nProcess_num: 3\n.*"
+} -wait