[PATCH v3 18/23] travis/gitlab/azure: Use bash to avoid a_test_which_does_not_exist

[Tom Rini]

On Wed, Mar 18, 2020 at 09:42:56AM -0600, Simon Glass wrote:

> Bash allows for variables to expand only if non-empty:
> 
> 	$ var=test
> 	$ echo ${var:+"$var"}
> 	test
> 	$ echo ${var:+"-k $var"}
> 	-k test
> 	$ var=
> 	$ echo ${var:+"-k $var"}
> 
> Use this feature to avoid the workaround.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Tom Rini <trini at konsulko.com>

Applied to u-boot/master, thanks!

-- 
Tom
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