Update Buildroot to 2019.02.3 (#415)

* Update Buildroot to 2019-02.3

* Fix enter script

* Update ova_defconfig

* Fix network manager

* Remove runc patches

* Use same docker version

* Fix build

* Fix vmtools

* Fix depens

* Fix handling with tempfiles

* Fix permission handling

* Fix cp

* Cleanup

* Fix mounts

buildroot/configs/grinn_chiliboard_defconfig

@@ -1,7 +1,6 @@
 BR2_arm=y
 BR2_cortex_a8=y
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_16=y
-BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
 BR2_SYSTEM_DHCP="eth0"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="board/grinn/chiliboard/post-image.sh"
 BR2_LINUX_KERNEL=y