scripts: fix executable attribute for includes

rpmbuild pointed out that this is wrong to have executable files without
shebang. Taking the opportunity and fix this for other files too.

Change-Id: Ib21f436672150edc0aff511bff2eb6839870cf79
Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-on: https://review.gerrithub.io/425382


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>