(DOCSP-4987): Add troubleshooting entry for replacing configmaps

Author: Tahiya Chowdhury

source/reference/troubleshooting.txt

@@ -304,6 +304,20 @@ those pods.
    To learn more about this issue, see
    `Kubernetes Issue 67250 <https://github.com/kubernetes/kubernetes/issues/67250>`__.
 
+.. _replace-config-file:
+
+Force Replace a Config File to Reflect Changes
+----------------------------------------------
+
+Invoke the following command to replace a config file:
+
+.. code-block:: shell
+
+      kubectl replace -f <configfilename>.yaml 
+
+This deletes and re-creates the resource. It is useful in cases where you need to update resource fields that cannot be updated once 
+initialized, or you just want to propagate changes made in the configMap to other config files.
+
 .. _remove-k8s-resource:
 
 Remove a |k8s-mdbrsc|