gitlab-ci: Fix indentation in some stanzas

In a number of our stanzas we had multi-line commands that were one
space short of alignment, correct this.
Reviewed-by: NStephen Warren <swarren@nvidia.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Tested-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NTom Rini <trini@konsulko.com>