CBQE-5999: [65/n] CBQE-5801 update better localstack server.

Change-Id: I3491bb7ecaf9338d994ed55428cbeee30a6f18f5
Reviewed-on: http://review.couchbase.org/c/testrunner/+/132916
Tested-by: Thuan Nguyen <soccon@gmail.com>
Reviewed-by: Arunkumar Senthilnathan <arun.couchbase@yahoo.com>
Reviewed-on: http://review.couchbase.org/c/testrunner/+/136875
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Asad Zaidi <asad.zaidi@couchbase.com>

b/resources/9-nodes-template-bkrs-localstack-7.ini

@@ -66,7 +66,7 @@ rest_password:password
 [cbbackupmgr]
 access_key_id:asdf
 bucket:default
-endpoint:http://172.23.96.121:4572
+endpoint:http://172.23.108.27:4572
 region:asdf
 secret_access_key:asdf
 staging_directory:/tmp/cbbackupmgr-staging