Only queue check_for_evm_snapshots zones active smartstate role

We should only queue the Job.check_for_evm_snapshots method on zones
which have an active smartstate role.

app/models/miq_schedule_worker/jobs.rb

@@ -43,7 +43,12 @@ def session_check_session_timeout
   end
 
   def job_check_for_evm_snapshots(job_not_found_delay)
-    queue_work_on_each_zone(:class_name  => "Job", :method_name => "check_for_evm_snapshots", :args => [job_not_found_delay])
+    queue_work_on_each_zone_with_active_role(
+      "smartstate",
+      :class_name  => "Job",
+      :method_name => "check_for_evm_snapshots",
+      :args        => [job_not_found_delay]
+    )
   end
 
   def vm_scan_dispatcher_dispatch
@@ -207,4 +212,10 @@ def queue_work(options)
   def queue_work_on_each_zone(options)
     Zone.in_my_region.each { |z| queue_work(options.merge(:zone => z.name)) }
   end
+
+  def queue_work_on_each_zone_with_active_role(role_name, options)
+    Zone.in_my_region
+        .select { |z| z.role_active?(role_name) }
+        .each { |z| queue_work(options.merge(:zone => z.name)) }
+  end
 end

spec/models/miq_schedule_worker/jobs_spec.rb

@@ -108,5 +108,27 @@
         expect(MiqQueue.where(:method_name => "log_config").first).to have_attributes(:queue_name => "miq_server", :server_guid => guid, :zone => zone.name, :priority => MiqQueue::MEDIUM_PRIORITY)
       end
     end
+
+    describe "#job_check_for_evm_snapshots" do
+      context "with no zones having an active smartstate role" do
+        it "doesn't queue any work" do
+          described_class.new.job_check_for_evm_snapshots(1.hour)
+          expect(MiqQueue.count).to be_zero
+        end
+      end
+
+      context "with a zone having an active smartstate role" do
+        let(:role) { ServerRole.find_by(:name => "smartstate") || FactoryBot.create(:server_role, :name => 'smartstate', :max_concurrent => 0) }
+        before do
+          server.assign_role(role).update(:active => true)
+        end
+
+        it "doesn't queue any work" do
+          described_class.new.job_check_for_evm_snapshots(1.hour)
+          expect(MiqQueue.count).to eq(1)
+          expect(MiqQueue.where(:class_name => "Job", :method_name => "check_for_evm_snapshots").first).to have_attributes(:queue_name => "generic", :zone => zone.name, :priority => MiqQueue::MEDIUM_PRIORITY)
+        end
+      end
+    end
   end
 end