Rename requires files to standard names.

Rename tools/pip-requires to requirements.txt and tools/test-requires
to test-requirements.txt. These are standard files, and tools in the
general world are growing intelligence about them.

Change-Id: Ib3e50a811868e2969923d978ee00c4f92682aa1c
Fixes: bug #1179008

setup.py

@@ -22,7 +22,7 @@ from swift import __canonical_version__ as version
 name = 'swift'
 
 
-with open('tools/pip-requires', 'r') as f:
+with open('requirements.txt', 'r') as f:
     requires = [x.strip() for x in f if x.strip()]
 
 

tox.ini

@@ -10,8 +10,8 @@ setenv = VIRTUAL_ENV={envdir}
          NOSE_OPENSTACK_SHOW_ELAPSED=1
          NOSE_OPENSTACK_STDOUT=1
 deps =
-  -r{toxinidir}/tools/pip-requires
-  -r{toxinidir}/tools/test-requires
+  -r{toxinidir}/requirements.txt
+  -r{toxinidir}/test-requirements.txt
 commands = nosetests test/unit {posargs}
 
 [tox:jenkins]