LU-15521 spec: fix more bare words error with rpm 4.16

LU-15521 spec: fix more bare words error with rpm 4.16

This patch fixes more bare words errors and extra tokens
warnings with rpm 4.16.

Lustre-change: https://review.whamcloud.com/47833
Lustre-commit: 81530fe44c6b8d8819b8e70ea99ef7014c23a05b

Test-Parameters: trivial

Change-Id: Ic40b5763d1cb362d5aa77b06e9a5768b2abbc708
Fixes: 597a6bf9e085 ("LU-15521 spec: fix bare words error with rpm 4.16")
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/47835
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>