run-jjb.py: fix updated jobs between 2 commits

jenkins git plugin provides GIT_PREVIOUS_COMMIT. Use it to list
the modified files between the previous built commit and current
commit.

Change-Id: I3356f9d3e74fed7db2c6574a401163f5c0e40dd1
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/run-jjb.py b/run-jjb.py
index 957ed51e54..741119bb86 100755
--- a/run-jjb.py
+++ b/run-jjb.py
@@ -11,8 +11,9 @@ from distutils.spawn import find_executable
 jjb_cmd = find_executable('jenkins-jobs') or sys.exit('jenkins-jobs is not found.')
 
 try:
-    arguments = ['git', 'diff-tree', '--no-commit-id', '--name-only',
-                 '--diff-filter=AM', '-r', os.environ.get('GIT_COMMIT')]
+    arguments = ['git', 'diff', '--name-only',
+                 os.environ.get('GIT_PREVIOUS_COMMIT'),
+                 os.environ.get('GIT_COMMIT')]
     proc = subprocess.Popen(arguments,
                             stdin=subprocess.PIPE,
                             stdout=subprocess.PIPE,