Amend the message on collective failure

Main example is RedHat providing pyOpenSSL of relatively ancient
vintage.

confluent_server/confluent/plugins/hardwaremanagement/ipmi.py

@@ -395,7 +395,8 @@ class IpmiHandler(object):
         self.tenant = cfg.tenant
         tenant = cfg.tenant
         if ((node, tenant) not in persistent_ipmicmds or
-                not persistent_ipmicmds[(node, tenant)].ipmi_session.logged):
+                not persistent_ipmicmds[(node, tenant)].ipmi_session.logged or
+                persistent_ipmicmds[(node, tenant)].ipmi_session.broken):
             try:
                 persistent_ipmicmds[(node, tenant)].close_confluent()
             except KeyError:  # was no previous session

confluent_server/confluent/sockapi.py

@@ -144,6 +144,15 @@ def sessionhdl(connection, authname, skipauth=False, cert=None):
     send_data(connection, {'authpassed': 1})
     request = tlvdata.recv(connection)
     if 'collective' in request and skipauth:
+        if not libssl:
+            tlvdata.send(
+                connection,
+                {'collective': {'error': 'Server either does not have '
+                                         'python-pyopenssl installed or has an '
+                                         'incorrect version installed '
+                                         '(e.g. pyOpenSSL would need to be '
+                                         'replaced with python-pyopenssl)'}})
+            return
         return collective.handle_connection(connection, None, request['collective'],
                                      local=True)
     while request is not None: