config: add subj URI to config verification error

Before this patch, it was quite difficult to determine, which URI in
config was unsuitable.
Now the subject URI is listed in the error body.

NO_DOC=bugfix

Part of #9644

changelogs/unreleased/gh-9644-verbose-uri-error.md

@@ -0,0 +1,4 @@
+## bugfix/config
+
+* Added a subject URI to the error that is thrown on configuration
+  verification (gh-9644).

src/box/lua/config/instance_config.lua

@@ -212,7 +212,7 @@ local function validate_uri_field(has_login_field, used_to_connect)
         if used_to_connect then
             local ok, err = uri_is_suitable_to_connect(uri)
             if not ok then
-                w.error(err)
+                w.error("bad URI %q: %s", data, err)
             end
         end
     end

test/config-luatest/instance_config_schema_test.lua

@@ -531,62 +531,71 @@ for case_name, case in pairs({
         advertise = {uri = '0.0.0.0:3301'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "0.0.0.0:3301"',
             'INADDR_ANY (0.0.0.0) cannot be used to create a client socket',
         }, ': '),
     },
     inaddr_any_ipv4_user = {
         advertise = {uri = '0.0.0.0:3301', login = 'user'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "0.0.0.0:3301"',
             'INADDR_ANY (0.0.0.0) cannot be used to create a client socket',
         }, ': '),
     },
     inaddr_any_ipv4_user_pass = {
         advertise = {uri = '0.0.0.0:3301', login = 'user', password = 'pass'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "0.0.0.0:3301"',
             'INADDR_ANY (0.0.0.0) cannot be used to create a client socket',
         }, ': '),
     },
     inaddr_any_ipv6 = {
         advertise = {uri = '[::]:3301'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "[::]:3301"',
             'in6addr_any (::) cannot be used to create a client socket',
         }, ': '),
     },
     inaddr_any_ipv6_user = {
         advertise = {uri = '[::]:3301', login = 'user'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "[::]:3301"',
             'in6addr_any (::) cannot be used to create a client socket',
         }, ': '),
     },
     inaddr_any_ipv6_user_pass = {
         advertise = {uri = '[::]:3301', login = 'user', password = 'pass'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "[::]:3301"',
             'in6addr_any (::) cannot be used to create a client socket',
         }, ': '),
     },
     zero_port = {
         advertise = {uri = 'localhost:0'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "localhost:0"',
             'An URI with zero port cannot be used to create a client socket',
         }, ': '),
     },
     zero_port_user = {
         advertise = {uri = 'localhost:0', login = 'user'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "localhost:0"',
             'An URI with zero port cannot be used to create a client socket',
         }, ': '),
     },
     zero_port_user_pass = {
         advertise = {uri = 'localhost:0', login = 'user', password = 'pass'},
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.%s.uri',
+            'bad URI "localhost:0"',
             'An URI with zero port cannot be used to create a client socket',
         }, ': '),
     },
@@ -629,20 +638,23 @@ for case_name, case in pairs({
         advertise = '0.0.0.0:3301',
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.client',
+            'bad URI "0.0.0.0:3301"',
             'INADDR_ANY (0.0.0.0) cannot be used to create a client socket',
         }, ': '),
     },
     inaddr_any_ipv6 = {
         advertise = '[::]:3301',
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.client',
+            'bad URI "[::]:3301"',
             'in6addr_any (::) cannot be used to create a client socket',
         }, ': '),
     },
     zero_port = {
         advertise = 'localhost:0',
         exp_err_msg = table.concat({
             '[instance_config] iproto.advertise.client',
+            'bad URI "localhost:0"',
             'An URI with zero port cannot be used to create a client socket',
         }, ': '),
     },