oeqa/utils: Allow ~ in bblayers

Bitbake can parse ~ in bblayer's paths.
Added this functionality to oeqa code.

(From OE-Core rev: b4dc5b271247a1894d66908c5f20973be2a60d43)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/commands.py

@@ -155,6 +155,8 @@ def get_test_layer():
     layers = get_bb_var("BBLAYERS").split()
     testlayer = None
     for l in layers:
+        if '~' in l:
+            l = os.path.expanduser(l)
         if "/meta-selftest" in l and os.path.isdir(l):
             testlayer = l
             break