Bump buildroot to 2019.02

bsp/buildroot/support/scripts/generate-gitlab-ci-yml

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -e
+set -o pipefail
+
+input="${1}"
+
+cat "${input}"
+
+(
+    cd configs
+    LC_ALL=C ls -1 *_defconfig
+) \
+    | sed 's/$/: { extends: .defconfig }/'
+
+./support/testing/run-tests -l 2>&1 \
+    | sed -r -e '/^test_run \((.*)\).*/!d; s//\1: { extends: .runtime_test }/' \
+    | LC_ALL=C sort