metabase,ssh: fix json parameters

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

 {
   "$schema": "http://json-schema.org/draft-04/schema#",
   "type": "object",
+  "additionalProperties": false,
   "properties": {
     "mb_password_complexity": {
       "title": "Password complexity",
@@ -10,14 +11,14 @@
       "enum": [
         "weak",
         "normal",
-        "strong",
+        "strong"
       ]
     },
     "mb_password_length": {
       "title": "Password length",
       "description": "Password length",
       "type": "integer",
-      "default": 6,
+      "default": 6
     }
   }
 }

software/metabase/instance-metabase-output-schema.json

+{
+  "$schema": "https://json-schema.org/draft-04/schema#",
+  "type": "object",
+  "properties": {
+    "url": {
+      "title": "URL",
+      "description": "URL to access metabase.",
+      "type": "string",
+      "format": "uri"
+    }
+  }
+}

software/metabase/software.cfg.json

+{
+  "name": "Metabase",
+  "description": "Business Intelligence and Reporting tool",
+  "serialisation": "xml",
+  "software-type": {
+    "default": {
+      "title": "Default",
+      "software-type": "default",
+      "description": "Default",
+      "request": "instance-metabase-input-schema.json",
+      "response": "instance-metabase-output-schema.json",
+      "index": 1
+    }
+  }
+}

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

 {
   "$schema": "http://json-schema.org/draft-04/schema#",
   "type": "object",
+  "additionalProperties": false,
   "properties": {
     "user-authorized-key": {
       "title": "User Authorized Key",

software/ssh/instance-ssh-output-schema.json

@@ -2,9 +2,14 @@
   "$schema": "http://json-schema.org/draft-04/schema#",
   "description": "Values returned by instanciation",
   "properties": {
-    "ssh_command": {
-      "description": "SSH command used to access your instance in ssh when you provided a ssh public key",
+    "ssh-command": {
+      "description": "SSH command used to access the instance",
       "type": "string"
+    },
+    "ssh-url": {
+      "description": "ssh:// URL to access the instance",
+      "type": "string",
+      "format": "uri"
     }
   },
   "type": "object"

software/ssh/software.cfg.json

 {
   "name": "SSH",
   "description": "SSH software release which provide the SSH service",
-  "serialisation": "json-in-xml",
+  "serialisation": "xml",
   "software-type": {
     "default": {
       "title": "Default",