samples: net: http: Add TLS compilation test
samples: net: http: Add TLS compilation test

Make sure that TLS configuration is valid by adding a compilation
test for it.

Signed-off-by: Jukka Rissanen <f9f077d1da4c7aa947f9864fa5a28c3588f6a45d@linux.intel.com>

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