Sync from oslo-incubator

Here are the changes:
f29e865 Store ProcessLauncher signal handlers on class level
5509577 Remove unused validate_ssl_version

Also removed policy.py from openstack-common.conf as it is
already removed from oslo-incubator.

Change-Id: Id1d7250b5cff142d54004f604e6c2ae04709958b

nova/openstack/common/service.py

@@ -199,6 +199,13 @@ class ServiceWrapper(object):
 
 
 class ProcessLauncher(object):
+    _signal_handlers_set = set()
+
+    @classmethod
+    def _handle_class_signals(cls, *args, **kwargs):
+        for handler in cls._signal_handlers_set:
+            handler(*args, **kwargs)
+
     def __init__(self):
         """Constructor."""
 
@@ -210,7 +217,8 @@ class ProcessLauncher(object):
         self.handle_signal()
 
     def handle_signal(self):
-        _set_signals_handler(self._handle_signal)
+        self._signal_handlers_set.add(self._handle_signal)
+        _set_signals_handler(self._handle_class_signals)
 
     def _handle_signal(self, signo, frame):
         self.sigcaught = signo

nova/openstack/common/sslutils.py

@@ -79,27 +79,3 @@ def wrap(sock):
         ssl_kwargs['cert_reqs'] = ssl.CERT_REQUIRED
 
     return ssl.wrap_socket(sock, **ssl_kwargs)
-
-
-_SSL_PROTOCOLS = {
-    "tlsv1": ssl.PROTOCOL_TLSv1,
-    "sslv23": ssl.PROTOCOL_SSLv23,
-}
-
-try:
-    _SSL_PROTOCOLS["sslv2"] = ssl.PROTOCOL_SSLv2
-except AttributeError:
-    pass
-
-try:
-    _SSL_PROTOCOLS["sslv3"] = ssl.PROTOCOL_SSLv3
-except AttributeError:
-    pass
-
-
-def validate_ssl_version(version):
-    key = version.lower()
-    try:
-        return _SSL_PROTOCOLS[key]
-    except KeyError:
-        raise RuntimeError(_("Invalid SSL version : %s") % version)

openstack-common.conf

@@ -9,7 +9,6 @@ module=local
 module=loopingcall
 module=memorycache
 module=periodic_task
-module=policy
 module=report
 module=report.generators
 module=report.models