add missing ceph.py, add python-cephlibs requirement

ceph.py

+import rados
+import os
+
+
+class CephConfig:
+
+    def __init__(self, user=None, config_path=None, keyring_path=None):
+
+        self.user = user or "admin"
+        self.config_path = (
+            config_path or os.getenv("CEPH_CONFIG", "/etc/ceph/ceph.conf"))
+        default_keyring = "/etc/ceph/ceph.client.%s.keyring" % self.user
+        self.keyring_path = (
+            keyring_path or os.getenv("CEPH_KEYRING", default_keyring))
+
+    def cmd_args(self):
+        return ["--keyring", self.keyring_path,
+                "--id", self.user,
+                "--conf", self.config_path]
+
+
+class CephConnection:
+
+    def __init__(self, pool_name, conf=None, **kwargs):
+
+        self.pool_name = pool_name
+        self.conf = conf or CephConfig(**kwargs)
+        self.cluster = None
+        self.ioctx = None
+
+    def __enter__(self):
+        try:
+            self.cluster = rados.Rados(
+                conffile=self.conf.config_path,
+                conf=dict(keyring=self.conf.keyring_path))
+            timeout = os.getenv("CEPH_TIMEOUT", 2)
+            self.cluster.connect(timeout=timeout)
+            self.ioctx = self.cluster.open_ioctx(self.pool_name)
+        except rados.InterruptedOrTimeoutError as e:
+            raise Exception(e)
+
+        return self
+
+    def __exit__(self, type, value, traceback):
+
+        self.ioctx.close()
+        self.cluster.shutdown()

requirements/base.txt

 celery==3.1.17
 requests==2.5.3
 filemagic==1.6
+python-cephlibs==0.94.5-1