Update buildroot to 2020.02.7 (#923)

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

buildroot/support/testing/infra/__init__.py

@@ -78,7 +78,7 @@ def get_elf_arch_tag(builddir, prefix, fpath, tag):
     cmd = ["host/bin/{}-readelf".format(prefix),
            "-A", os.path.join("target", fpath)]
     out = run_cmd_on_host(builddir, cmd)
-    regexp = re.compile("^  {}: (.*)$".format(tag))
+    regexp = re.compile(r"^  {}: (.*)$".format(tag))
     for line in out.splitlines():
         m = regexp.match(line)
         if not m:
@@ -105,7 +105,7 @@ def get_elf_prog_interpreter(builddir, prefix, fpath):
     cmd = ["host/bin/{}-readelf".format(prefix),
            "-l", os.path.join("target", fpath)]
     out = run_cmd_on_host(builddir, cmd)
-    regexp = re.compile("^ *\[Requesting program interpreter: (.*)\]$")
+    regexp = re.compile(r"^ *\[Requesting program interpreter: (.*)\]$")
     for line in out.splitlines():
         m = regexp.match(line)
         if not m:

buildroot/support/testing/tests/core/test_timezone.py

@@ -4,10 +4,10 @@ import infra.basetest
 
 
 def boot_armv5_cpio(emulator, builddir):
-        img = os.path.join(builddir, "images", "rootfs.cpio")
-        emulator.boot(arch="armv5", kernel="builtin",
-                      options=["-initrd", img])
-        emulator.login()
+    img = os.path.join(builddir, "images", "rootfs.cpio")
+    emulator.boot(arch="armv5", kernel="builtin",
+                  options=["-initrd", img])
+    emulator.login()
 
 
 class TestNoTimezone(infra.basetest.BRTest):

buildroot/support/testing/tests/package/test_docker_compose.py

@@ -20,7 +20,6 @@ class TestDockerCompose(infra.basetest.BRTest):
         BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
         BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="{}"
         BR2_PACKAGE_CA_CERTIFICATES=y
-        BR2_PACKAGE_CGROUPFS_MOUNT=y
         BR2_PACKAGE_DOCKER_CLI=y
         BR2_PACKAGE_DOCKER_COMPOSE=y
         BR2_PACKAGE_DOCKER_ENGINE=y