Merge topic 'ci-env-scripts'

bf973c41e5 ci: Factor out scripts to add sccache to job environment
b0f7aebc77 ci: Factor out scripts to add ninja to job environment
ef3495f74f ci: Factor out scripts to add cmake to job environment

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !9452