feat: add summary changes

Signed-off-by: Manan Gupta <[email protected]>

changelog/22.0/22.0.0/summary.md

@@ -4,6 +4,7 @@
 
 - **[Major Changes](#major-changes)**
   - **[RPC Changes](#rpc-changes)**
+  - **[VTOrc Config File Changes](#vtorc-config-file-changes)**
 
 
 ## <a id="major-changes"/>Major Changes</a>
@@ -13,3 +14,22 @@
 These are the RPC changes made in this release - 
 
 1. `GetTransactionInfo` RPC has been added to both `VtctldServer`, and `TabletManagerClient` interface. These RPCs are used to fecilitate the users in reading the state of an unresolved distributed transaction. This can be useful in debugging what went wrong and how to fix the problem.
+
+### <a id="vtorc-config-file-changes"/>VTOrc Config File Changes</a>
+
+The configuration file for VTOrc has been updated to now support dynamic fields. The old `--config` parameter has been removed. The alternative is to use the `--config-file` parameter. The configuration can now be provided in both json, yaml or any other format that [viper](https://github.com/spf13/viper) supports.
+
+The following fields can be dynamically changed - 
+1. `InstancePollTime`
+2. `PreventCrossCellFailover`
+3. `SnapshotTopologyInterval`
+4. `ReasonableReplicationLag`
+5. `AuditToBackend`
+6. `AuditToSyslog`
+7. `AuditPurgeDuration`
+8. `WaitReplicasTimeout`
+9. `TolerableReplicationLag`
+10. `TopoInformationRefreshDuration`
+11. `RecoveryPollDuration`
+
+To upgrade to the newer version of the configuration file, the users can first change to using the flags in the previous release before upgrading. They can then revert to using the configuration file in the newer release.