revert "stick with pbr 0.5.19" commit

revert the following commit because it doesn't work with
the latest oslo.config which requires newer pbr.

|commit 205485e0520d8f37c49b66bbbf012a9448cd9367
|Author: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
|Date:   Fri Aug 30 14:08:49 2013 +0900
|
|    stick with pbr 0.5.19
|
|    the latest versions of pbr generate scripts which don't support
|    multiversion.  to avoid importing modules from older multiversion-aware
|    installations of ryu, we prefer multiversion-aware scripts.
|
|    Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
|    Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

the problem reported by Satoshi Kobayashi on ryu-devel.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

2 files changed, 3 insertions, 8 deletions

diff --git a/setup.cfg b/setup.cfg
index fd497747..a3d33294 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -43,7 +43,6 @@ doc_files = LICENSE
 
 [global]
 setup-hooks =
-    pbr.hooks.setup_hook
     ryu.hooks.setup_hook
 
 [entry_points]
diff --git a/setup.py b/setup.py
index 14553468..b7f3a9b9 100644
--- a/setup.py
+++ b/setup.py
@@ -22,14 +22,10 @@ except ImportError:
 
 import setuptools
 import os
+from ryu import version
 
 
-# the latest versions of pbr generate scripts which don't support
-# multiversion.  to avoid importing modules from older multiversion-aware
-# installations of ryu, we prefer multiversion-aware scripts.
-PBR_VERSION = '0.5.19'
-
-os.environ["PBR_VERSION"] = PBR_VERSION
+os.environ["PBR_VERSION"] = str(version)
 setuptools.setup(name='ryu',
-                 setup_requires=['pbr==%s' % (PBR_VERSION,)],
+                 setup_requires=['pbr'],
                  pbr=True)