oeqa/utils: make get_bb_var() more reliable

* Enable querying exported variables
* Use strip() to remove quotes so any internal quotes are not disturbed

(From OE-Core rev: 418cdf1ca37e06165ebaec86a0098d4750208539)

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

meta/lib/oeqa/utils/commands.py

@@ -138,9 +138,9 @@ def get_bb_var(var, target=None, postconfig=None):
     val = None
     bbenv = get_bb_env(target, postconfig=postconfig)
     for line in bbenv.splitlines():
-        if line.startswith(var + "="):
+        if line.startswith(var + "=") or line.startswith("export " + var + "="):
             val = line.split('=')[1]
-            val = val.replace('\"','')
+            val = val.strip('\"')
             break
     return val