enhance error message

Author: kathap

app/controllers/v3/service_instances_controller.rb

@@ -430,7 +430,7 @@ def unprocessable_service_plan!
   end
 
   def service_plan_not_visible_in_space!
-    unprocessable!('Invalid service plan. Ensure that the service plan is visible in your current space.')
+    unprocessable!('Invalid service plan. Ensure that the service plan is visible in your current space and still available in the broker\'s catalog.')
   end
 
   def invalid_service_plan_relation!

spec/request/service_instances_spec.rb

@@ -1260,7 +1260,7 @@ def check_filtered_instances(*instances)
             expect(last_response).to have_status_code(422)
             expect(parsed_response['errors']).to include(
               include({
-                        'detail' => 'Invalid service plan. Ensure that the service plan is visible in your current space.',
+                        'detail' => 'Invalid service plan. Ensure that the service plan is visible in your current space and still available in the broker\'s catalog.',
                         'title' => 'CF-UnprocessableEntity',
                         'code' => 10_008
                       })
@@ -1276,7 +1276,7 @@ def check_filtered_instances(*instances)
             expect(last_response).to have_status_code(422)
             expect(parsed_response['errors']).to include(
               include({
-                        'detail' => 'Invalid service plan. Ensure that the service plan exists, is available, and you have access to it.',
+                        'detail' => 'Invalid service plan. Ensure that the service plan is visible in your current space and still available in the broker\'s catalog.',
                         'title' => 'CF-UnprocessableEntity',
                         'code' => 10_008
                       })
@@ -2413,7 +2413,7 @@ def check_filtered_instances(*instances)
             expect(last_response).to have_status_code(422)
             expect(parsed_response['errors']).to include(
               include({
-                        'detail' => 'Invalid service plan. Ensure that the service plan is visible in your current space.',
+                        'detail' => 'Invalid service plan. Ensure that the service plan is visible in your current space and still available in the broker\'s catalog.',
                         'title' => 'CF-UnprocessableEntity',
                         'code' => 10_008
                       })