(DOCS-15988): Add notes that a Replica Set must be healthy and running when importing to OM (#4980) (#4999)

* Add notes for successfully importing existing rs

* tech review feedback

Author: davidhou17

source/includes/facts/fact-remove-binaries.rst

@@ -0,0 +1,6 @@
+{+mdbagent+} Binaries
+~~~~~~~~~~~~~~~~~~~~~~
+
+If you stop using |mms| to manage a deployment and completely 
+remove the deployment from |mms|, |mms| deletes the 
+binaries under the {+mdbagent+}'s ``/bin`` directory.

source/includes/prerequisites-for-adding-existing-deployment-to-automation.rst

@@ -88,4 +88,7 @@
   keyfiles are the same on the source and destination clusters. To learn
   more, see :ref:`Authentication Credentials on Source and Destination Clusters
   <auth-creds-on-source-and-destination>`.
+  
+- To successfully import an existing replica set to |mms|, 
+  the instance must be healthy.
   

source/tutorial/unmanage-deployment.txt

@@ -21,7 +21,7 @@ capabilities, you can stop |mms| from either:
 - Managing, monitoring, *and* backing up your deployment 
 
 After you stop |mms| from managing a deployment, you cannot use |mms| 
-to upgrade, stop, start, or change that deployment’s configuration in 
+to upgrade, stop, start, or change that deployment's configuration in 
 any way. If you want to
 :doc:`shut down your deployment </tutorial/shut-down-deployment>`
 before stop |mms| from managing it, *do that first*. Otherwise, you
@@ -50,6 +50,8 @@ Considerations
 
    .. include:: /includes/fact-restore-deleted-host.rst
 
+   .. include:: /includes/facts/fact-remove-binaries.rst
+
 Prerequisites
 -------------