Update Github PR Template

Ask for docker healthcheck, traefik healthcheck and replicas's count

Author: YuryHrytsuk

.github/PULL_REQUEST_TEMPLATE.md

@@ -18,8 +18,11 @@
 - [ ] Service has placement constraints or is global
 - [ ] Service is restartable
 - [ ] Service restart is zero-downtime
+- [ ] Service has >1 replicas in PROD
+- [ ] Service has docker heathlcheck enabled
 - [ ] Service is monitored (via prometheus and grafana)
 - [ ] Service is not bound to one specific node (e.g. via files or volumes)
 - [ ] Relevant OPS E2E Test are added
 - [ ] Service's Public URL is included in maintenance mode
-- [ ] Service's Public URL is included in testing mode -->
+- [ ] Service's Public URL is included in testing mode
+- [ ] Service's has Traefik (Service Loadbalancer) Healthcheck enabled -->