sanitycheck: export list of tests as CSV
sanitycheck: export list of tests as CSV

Export tests to a file with Section, subsection and identifier as
columns making it easy to import testcases into test management system.

Signed-off-by: Anas Nashif <0d9952ec84ac43c159f6b7e7ed99a9080c00dd6e@intel.com>

explora26/zephyr,mbolivar/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,ldts/zephyr,ldts/zephyr,zephyriot/zephyr,nashif/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,finikorg/zephyr,finikorg/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,kraj/zephyr,galak/zephyr,punitvara/zephyr,punitvara/zephyr,ldts/zephyr,nashif/zephyr,mbolivar/zephyr,kraj/zephyr,zephyriot/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,punitvara/zephyr,kraj/zephyr,GiulianoFranchetto/zephyr,zephyriot/zephyr,zephyriot/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,galak/zephyr,mbolivar/zephyr,galak/zephyr,mbolivar/zephyr,finikorg/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,zephyriot/zephyr,Vudentz/zephyr,mbolivar/zephyr,kraj/zephyr,explora26/zephyr,nashif/zephyr,finikorg/zephyr,ldts/zephyr,galak/zephyr,explora26/zephyr,Vudentz/zephyr,explora26/zephyr,ldts/zephyr,kraj/zephyr,nashif/zephyr,Vudentz/zephyr