Remove extra spaces from exception message

Without this change, it prints with extra spaces -- e.g.: E elasticsearch.exceptions.ImproperlyConfigured: No defined connections, you need to specify at least one host.

Author: msabramo

elasticsearch/connection_pool.py

@@ -102,8 +102,8 @@ def __init__(self, connections, dead_timeout=60, timeout_cutoff=5,
  avoid dog piling effect across processes
  """
  if not connections:
- raise ImproperlyConfigured("No defined connections, you need to \
- specify at least one host.")
+ raise ImproperlyConfigured("No defined connections, you need to "
+ "specify at least one host.")
  self.connection_opts = connections
  self.connections = [c for (c, opts) in connections]
  # remember original connection list for resurrect(force=True)