When we change documentation or board images, do not build all tests for
this board. Only add more tests when actual code has changed.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This addition would catch tests being added or modified and would run
those tests with --all and catch issues with non default board
configurations before they get merged into the tree.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>