Add state attribute to environment graphql API

app/graphql/types/environment_type.rb

@@ -12,5 +12,8 @@ module Types
 
     field :id, GraphQL::ID_TYPE, null: false,
           description: 'ID of the environment'
+
+    field :state, GraphQL::STRING_TYPE, null: false,
+          description: 'State of the environment, for example: available/stopped'
   end
 end

doc/api/graphql/reference/gitlab_schema.graphql

@@ -1869,6 +1869,11 @@ type Environment {
   Human-readable name of the environment
   """
   name: String!
+
+  """
+  State of the environment, for example: available/stopped
+  """
+  state: String!
 }
 
 """

doc/api/graphql/reference/gitlab_schema.json

@@ -5530,6 +5530,24 @@
               "description": "Human-readable name of the environment",
               "args": [
 
+              ],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "String",
+                  "ofType": null
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "state",
+              "description": "State of the environment, for example: available/stopped",
+              "args": [
+
               ],
               "type": {
                 "kind": "NON_NULL",

doc/api/graphql/reference/index.md

@@ -318,6 +318,7 @@ Describes where code is deployed for a project
 | ---   |  ---- | ----------  |
 | `id` | ID! | ID of the environment |
 | `name` | String! | Human-readable name of the environment |
+| `state` | String! | State of the environment, for example: available/stopped |
 
 ## Epic
 

spec/graphql/types/environment_type_spec.rb

@@ -7,7 +7,7 @@ describe GitlabSchema.types['Environment'] do
 
   it 'has the expected fields' do
     expected_fields = %w[
-      name id
+      name id state
     ]
 
     expect(described_class).to have_graphql_fields(*expected_fields)