MB-69828 Expand cbtransfer deprecation warning

It now also mentions cbimport and cbexport.

Change-Id: I6a6a636caf0b3f399e072f2b857f5c916afa2af4
Reviewed-on: https://review.couchbase.org/c/couchbase-cli/+/239021
Tested-by: Build Bot <build@couchbase.com>
Reviewed-by: Lubo Marinski <lubo.marinski@couchbase.com>

Author: matthallcb

docs/modules/cli/pages/cbtools/cbtransfer.adoc

@@ -25,7 +25,8 @@ _cbtransfer_ [--username <user>] [--password <password>] [--ssl]
 
 == DESCRIPTION
 
-DEPRECATION WARNING: This tool has been deprecated please use cbdatarecovery instead.
+DEPRECATION WARNING: This tool has been deprecated please use cbdatarecovery,
+cbimport or cbexport instead.
 
 The `cbtransfer` tool is a generic tool for transferring data from various
 types of source to various types of sinks. Both `cbbackup` and `cbrestore`

jenkins/.aspell.en.pws

@@ -28,7 +28,9 @@ cbbackupwrapper
 cbcli
 cbcollect
 cbdatarecovery
+cbexport
 cblogredaction
+cbimport
 CBO
 cbrecovery
 cbrestore

pump_transfer.py

@@ -36,7 +36,7 @@ def __init__(self):
         self.source_alias = "source"
         self.sink_alias = "destination"
         self.usage = \
-            "DEPRECATED: Please use cbdatarecovery instead.\n" \
+            "DEPRECATED: Please use cbdatarecovery, cbimport or cbexport instead.\n" \
             "%prog [options] source destination\n\n" \
             "Transfer couchbase cluster data from source to destination.\n\n" \
             "Examples:\n" \