Allow for configuring etcd progress notify interval and default set to 5s (#11499)

inventory/sample/group_vars/etcd.yml

@@ -33,3 +33,6 @@
 # etcd_experimental_distributed_tracing_sample_rate: 100
 # etcd_experimental_distributed_tracing_address: "localhost:4317"
 # etcd_experimental_distributed_tracing_service_name: etcd
+
+## The interval for etcd watch progress notify events
+# etcd_experimental_watch_progress_notify_interval: 5s

roles/etcd/defaults/main.yml

@@ -125,3 +125,6 @@ etcd_experimental_enable_distributed_tracing: false
 etcd_experimental_distributed_tracing_sample_rate: 100
 etcd_experimental_distributed_tracing_address: "localhost:4317"
 etcd_experimental_distributed_tracing_service_name: etcd
+
+# The interval for etcd watch progress notify events
+etcd_experimental_watch_progress_notify_interval: 5s

roles/etcd/templates/etcd.env.j2

@@ -76,3 +76,5 @@ ETCD_EXPERIMENTAL_DISTRIBUTED_TRACING_ADDRESS={{ etcd_experimental_distributed_t
 ETCD_EXPERIMENTAL_DISTRIBUTED_TRACING_SERVICE_NAME={{ etcd_experimental_distributed_tracing_service_name }}
 ETCD_EXPERIMENTAL_DISTRIBUTED_TRACING_INSTANCE_ID={{ etcd_member_name }}
 {% endif %}
+
+ETCD_EXPERIMENTAL_WATCH_PROGRESS_NOTIFY_INTERVAL={{ etcd_experimental_watch_progress_notify_interval }}