LU-17467 build: Expand CUDA source detection logic

LU-17467 build: Expand CUDA source detection logic

Fix the configure logic not handling the package disabling (variable
set to 'no') for the CUDA and GDS source paths

Signed-off-by: Jean-Baptiste Skutnik <jb.skutnik@gmail.com>
Change-Id: Icb96274a6df2508f8e3010daef0ba1d17b4471dc
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/53832
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alexey Lyashkov <alexey.lyashkov@hpe.com>
Reviewed-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>