Add more platform Travis tests

.travis.yml

buildroot/share/git/mftest

buildroot/share/tests/ARMED-tests

buildroot/share/tests/BIGTREE_SKR_MINI-tests

buildroot/share/tests/BIGTREE_SKR_PRO-tests

buildroot/share/tests/LPC1768-tests

buildroot/share/tests/LPC1769-tests

buildroot/share/tests/STM32F1-tests

buildroot/share/tests/STM32F4-tests

buildroot/share/tests/STM32F7-tests

buildroot/share/tests/adafruit_grandcentral_m4-tests

buildroot/share/tests/at90usb1286_cdc-tests

buildroot/share/tests/at90usb1286_dfu-tests

buildroot/share/tests/esp32-tests

buildroot/share/tests/fysetc_STM32F1-tests

buildroot/share/tests/fysetc_f6_13-tests

buildroot/share/tests/jgaurora_a5s_a1-tests

buildroot/share/tests/linux_native-tests

buildroot/share/tests/malyanm200-tests

buildroot/share/tests/megaatmega1280-tests