LU-12920 build: replace ed with sed

LU-12920 build: replace ed with sed

Ed commad is very old

Test-Parameters: trivial

Lustre-change: https://review.whamcloud.com/36630
Lustre-commit: 9e11ac388bd85967222dd5cb5ecade1d9b8f67a8

Change-Id: I18ffe50c3fb006182e68460c03a4d34d5011e62a
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-by: Wang Shilong <wshilong@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/37014
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>