software/erp5: Fix some schema errors.

/reviewed-on !416

software/erp5/instance-erp5-input-schema.json

@@ -190,14 +190,14 @@
     "kumofs": {
       "description": "Persistent memcached service",
       "additionalProperties": {
-        "$ref": "./instance-kumofs-schema.json#/properties"
+        "$ref": "./instance-kumofs-schema.json"
       },
       "type": "object"
     },
     "memcached": {
       "description": "Volatile memcached service",
       "additionalProperties": {
-        "$ref": "./instance-kumofs-schema.json#/properties"
+        "$ref": "./instance-kumofs-schema.json"
       },
       "type": "object"
     },
@@ -214,14 +214,14 @@
     "smtp": {
       "description": "Mail queuing and relay service",
       "additionalProperties": {
-        "$ref": "./instance-smtp-schema.json#/properties"
+        "$ref": "./instance-smtp-schema.json"
       },
       "type": "object"
     },
     "mariadb": {
       "description": "Relational database service",
       "additionalProperties": {
-        "$ref": "./instance-mariadb-schema.json#/properties"
+        "$ref": "./instance-mariadb-schema.json"
       },
       "type": "object"
     },
@@ -348,7 +348,7 @@
         }
       },
       "additionalProperties": {
-        "$ref": "../caucase/instance-caucase-input-schema.json#/properties"
+        "$ref": "../caucase/instance-caucase-input-schema.json"
       },
       "type": "object"
     }

software/erp5/instance-kumofs-schema.json

 {
   "$schema": "http://json-schema.org/draft-04/schema#",
+  "type": "object",
   "required": [
     "tcpv4-port"
   ],

software/erp5/instance-mariadb-schema.json

@@ -3,6 +3,7 @@
   "required": [
     "tcpv4-port"
   ],
+  "type": "object",
   "properties": {
     "tcpv4-port": {
       "allOf": [

software/erp5/instance-smtp-schema.json

@@ -4,6 +4,7 @@
   "required": [
     "tcpv4-port"
   ],
+  "type": "object",
   "properties": {
     "tcpv4-port": {
       "allOf": [