Add WanSync docs [CN-369] (#152)

* Add WanSync docs [CN-369]

* Apply suggestions from code review

Co-authored-by: rebekah-lawrence <[email protected]>

* update doc accoring to changes in implementation

* update field name

---------

Co-authored-by: rebekah-lawrence <[email protected]>

docs/modules/ROOT/examples/wan-sync-full.yaml

@@ -0,0 +1,6 @@
+apiVersion: hazelcast.com/v1alpha1
+kind: WanSync
+metadata:
+  name: wansync-sample
+spec:
+  wanReplicationResourceName: wan-replication-sample

docs/modules/ROOT/nav.adoc

@@ -15,6 +15,7 @@
 ** xref:replicatedmap-configuration.adoc[ReplicatedMap]
 * xref:backup-restore.adoc[Persistence, Backup, and Restore]
 * xref:wan-replication.adoc[Configuring WAN Replication]
+* xref:wan-sync.adoc[Syncronizing WAN replicated data]
 * xref:user-code-deployment.adoc[User Code Deployment]
 * xref:high-availability-mode.adoc[High Availability Mode]
 * xref:native-memory.adoc[Native Memory]

docs/modules/ROOT/pages/wan-sync.adoc

@@ -0,0 +1,43 @@
+= Syncronizing WAN replicated data
+:description: pass:q[WAN Syncronization allows you to overcome out-of-sync issues with the WAN replicated data. ]
+:page-enterprise: true
+
+{description}
+
+See xref:hazelcast:wan:advanced-features#synchronizing-wan-clusters.adoc[Synchronizing WAN Clusters] for more detailed information about the configuration and behavior of WAN replication in Hazelcast.
+
+== Prerequisites for WAN Sync
+
+Before you create and configure a `WanSync` resource, you must create the following:
+
+- At least one `Hazelcast` resource and one `Map` resource for the source Hazelcast cluster.
+- A target Hazelcast cluster that is accessible from the source cluster.   
+- A `WanReplication` CR that points to the target cluster.
+
+== Configuring the WanSync Resource
+
+To configure WAN Syncronization, you must create `WanSync` resource. For more detailed information, see the xref:api-ref.adoc#wansyncspec[API Reference].
+
+To create `WanSync` resource you must use the existing `WanReplication` CR. This means that the `WanSync` reuses the existing and running WAN replication process.
+
+.Example of WanSync using the existing WanReplication
+[source,yaml,subs="attributes+"]
+----
+include::ROOT:example$/wan-sync-full.yaml[]
+----
+
+== Checking the Status of a WAN Sync
+
+After creating the `WanSync` resource, run the following command to see the WAN syncronization status:
+
+[source,shell]
+----
+kubectl get wansync wansync-sample
+----
+
+The output is similar to the following:
+
+----
+NAME                     STATUS
+wansync-sample-sample    Completed
+----