Added timeout=timeout in wcsBase.py L 49, otherwise the timeout valu…

…e was being re-written to the default of 30 seconds. (#914)

owslib/coverage/wcsBase.py

@@ -46,7 +46,7 @@ def __new__(self, url, xml, cookies, auth=None, timeout=30, headers=None):
         @return: inititalised WCSBase object
         """
         obj = object.__new__(self)
-        obj.__init__(url, xml, cookies, auth=auth, headers=headers)
+        obj.__init__(url, xml, cookies, timeout=timeout, auth=auth, headers=headers)
         self.cookies = cookies
         self.headers = headers
         self.timeout = timeout