[gnome-continuous-yocto/gnomeostree-3.28-rocko: 1127/8267] oeqa.buildperf: add method to log shell commands

[Emmanuele Bassi <ebassi src gnome org>]

commit 1a0e20546ea451007b148f76c575eb3fea4bd8d1
Author: Markus Lehtonen <markus lehtonen linux intel com>
Date:   Thu Jun 16 14:29:46 2016 +0300

    oeqa.buildperf: add method to log shell commands
    
    Add new methods to BuildPerfTest class for running a shell
    command and logging its output.
    
    (From OE-Core rev: 8f0b11ba1266f9c650cf34d9b394d72009ee7207)
    
    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/base.py |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/meta/lib/oeqa/buildperf/base.py b/meta/lib/oeqa/buildperf/base.py
index d608061..230a7e7 100644
--- a/meta/lib/oeqa/buildperf/base.py
+++ b/meta/lib/oeqa/buildperf/base.py
@@ -112,6 +112,11 @@ class BuildPerfTest(object):
         """Actual test payload"""
         raise NotImplementedError
 
+    def log_cmd_output(self, cmd):
+        """Run a command and log it's output"""
+        with open(self.cmd_log, 'a') as fobj:
+            runCmd(cmd, stdout=fobj)
+
     def measure_cmd_resources(self, cmd, name, legend):
         """Measure system resource usage of a command"""
         def str_time_to_timedelta(strtime):