oeqa.buildperf: add BuildPerfTestLoader class

(From OE-Core rev: b281c4a49b0df1de9b3137efb8ff50744e06c48d)

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/buildperf/__init__.py

@@ -12,6 +12,7 @@
 """Build performance tests"""
 from .base import (perf_test_case,
                    BuildPerfTestCase,
+                   BuildPerfTestLoader,
                    BuildPerfTestRunner,
                    KernelDropCaches)
 from .test_basic import *

meta/lib/oeqa/buildperf/base.py

@@ -325,3 +325,8 @@ class BuildPerfTestCase(unittest.TestCase):
         os.sync()
         # Wait a bit for all the dirty blocks to be written onto disk
         time.sleep(3)
+
+
+class BuildPerfTestLoader(unittest.TestLoader):
+    """Test loader for build performance tests"""
+    sortTestMethodsUsing = None