Reformat .travis.yml test commands
Reformat .travis.yml test commands

Do not execute tests if the build fails.

Indent the commands for readability.

Signed-off-by: Kevin Rocard <f6672397850e914591889d29dcaf9077eb1a8a4f@intel.com>

geekboxzone/mmallow_external_parameter-framework,geekboxzone/mmallow_external_parameter-framework,geekboxzone/mmallow_external_parameter-framework