LU-14785 build: changelog updates should not dirty version

LU-14785 build: changelog updates should not dirty version

When building lustre debs the final version should not
include 'dirty' due to an update of the changelog

Lustre-change: https://review.whamcloud.com/44069
Lustre-commit: a91839eb57103e6fbf5a3f6bacfcc0c471620057

HPE-bug-id: LUS-10152
Test-Parameters: trivial
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: I59f4da4b3006302e3598cfa56a0364b052f885ef
Reviewed-on: https://review.whamcloud.com/47535
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>