oeqa/targetcontrol: create test directory before copying rootfs image

The test directory might not exist at this point so just go ahead and
create it.

(From OE-Core rev: 7ef86ce62b52f0f3d0c51e3c20d7b4f37025bf41)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/targetcontrol.py

@@ -143,6 +143,7 @@ class QemuTarget(BaseTarget):
 
     def deploy(self):
         try:
+            bb.utils.mkdirhier(self.testdir)
             shutil.copyfile(self.origrootfs, self.rootfs)
         except Exception as e:
             bb.fatal("Error copying rootfs: %s" % e)