tests: ztest: Add formatting in assert APIs
tests: ztest: Add formatting in assert APIs

All ztest_* apis now support format specifier which will
evetually help to pass variable arguments to ztest assert
apis in different test cases while showing error messages.

Signed-off-by: Punit Vara <2ba5e82aa6fb4e68460f49bedefe3af5717cea9b@intel.com>
Signed-off-by: Anas Nashif <0d9952ec84ac43c159f6b7e7ed99a9080c00dd6e@intel.com>

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