[#26552]yugabyted: Making changes to not delete the universe key after enabling EAR

Summary:
`yugabyted`, while enabling EAR,
1. Creates a universe key
2. Copies the key to masters
3. Then rotates that key in masters.
4. The universe key is then deleted from the machine assuming that it would not be used again (as the key in now in masters memory).

This should not be deleted as it is needed in case when all masters are
down or while restoring a backup of encrypted data  to another cluster.
Jira: DB-15919

Test Plan: ./yb_build.sh --java-test 'org.yb.yugabyted.*'

Reviewers: nikhil

Reviewed By: nikhil

Subscribers: yugabyted-dev, sgarg-yb

Differential Revision: https://phorge.dev.yugabyte.com/D42781

Author: gargsans-yb

bin/yugabyted

@@ -2655,11 +2655,10 @@ class ControlScript(object):
                             Output.log(out)
                             status_details = [
                                 (Output.make_yellow("Status"), out),
+                                (Output.make_yellow("Key Location"), f"The Encryption key is " +
+                                    f"stored at {key_path}. Moving the encryption key to a " +
+                                    "secure location is strongly advised. "),
                             ]
-
-            Output.log("Deleting the universe key generated for encryption at rest.")
-            if os.path.isdir(key_dir):
-                shutil.rmtree(key_dir)
         # Disabling encryption at rest
         else:
             Output.log("Trying to disable encryption at rest.")