Add templating and links keys to json schema

Add templating and links keys to dashboard fixture

doc/user/project/integrations/prometheus.md

@@ -385,7 +385,7 @@ The following tables outline the details of expected properties.
 
 | Property | Type | Required | Description |
 | -------- | ---- | -------- | ----------- |
-| `variables` | hash | no | Variables can be defined here. |
+| `variables` | hash | yes | Variables can be defined here. |
 
 Read the documentation on [templating](#templating-variables-for-metrics-dashboards).
 

spec/fixtures/lib/gitlab/metrics/dashboard/sample_dashboard.yml

 dashboard: 'Test Dashboard'
 priority: 1
+links:
+- title: Link 1
+  url: https://gitlab.com
+- title: Link 2
+  url: https://docs.gitlab.com
+templating:
+  variables:
+    text_variable_full_syntax:
+      label: 'Variable 1'
+      type: text
+      options:
+        default_value: 'default'
+    text_variable_simple_syntax: 'default value'
 panel_groups:
 - group: Group A
   priority: 1

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/dashboard.json

@@ -11,7 +11,9 @@
     "panel_groups": {
       "type": "array",
       "items": { "$ref": "spec/fixtures/lib/gitlab/metrics/dashboard/schemas/panel_groups.json" }
-    }
+    },
+    "templating": { "$ref": "spec/fixtures/lib/gitlab/metrics/dashboard/schemas/templating.json" },
+    "links": { "$ref": "spec/fixtures/lib/gitlab/metrics/dashboard/schemas/links.json" }
   },
   "additionalProperties": false
 }

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/links.json

+{
+  "type": "array",
+  "required": ["url"],
+  "properties": {
+    "url": { "type": "string" },
+    "title": { "type": "string" }
+  },
+  "additionalProperties": false
+}

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/templating.json

+{
+  "type": "object",
+  "required": ["variables"],
+  "properties": {
+    "variables": { "$ref": "variables.json" }
+  },
+  "additionalProperties": false
+}

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/text_variable_full_syntax.json

+{
+  "type": "object",
+  "required": [
+    "type", "options"
+  ],
+  "properties": {
+    "type": { "type": "string" },
+    "label": { "type": "string" },
+    "options": { "$ref": "text_variable_options.json" }
+  },
+  "additionalProperties": false
+}

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/text_variable_options.json

+{
+  "type": "object",
+  "properties": {
+    "default_value": { "type": "string" }
+  },
+  "additionalProperties": false
+}

spec/fixtures/lib/gitlab/metrics/dashboard/schemas/variables.json

+{
+  "type": "object",
+  "patternProperties": {
+    "^[a-zA-Z0-9_]*$": {
+        "anyOf": [
+          { "$ref": "text_variable_full_syntax.json" },
+          { "type": "string" }
+        ]
+      }
+  },
+  "additionalProperties": false
+}