WT-2142. At the end of a test run, all open connections should be closed

to prevent cascading errors. Clean up and (mostly) standardize how connection
configuration is added to and modified.

Details:
- class TestSuiteConnection wraps an opened Connection,
  calls to close() remove it from the list of active connections.

- WiredTigerTestCase.wiredtiger_open uses a TestSuiteConnection, and this
  version of wiredtiger_open is now used everywhere.

- in tearDown(), active connections are explicitly closed.

- In WiredTigerTestCase derived classes, we now use use self.conn_config
  if possible in tests in preference to overloading setUpConnectionOpen().

- Explicitly call close on extra connections created dynamically.

- Remove some unused code.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/suite/test_config01.py b/test/suite/test_config01.py
index f40f9df3b20..6e499e8584a 100644
--- a/test/suite/test_config01.py
+++ b/test/suite/test_config01.py
@@ -41,7 +41,7 @@ class test_config01(test_base03.test_base03):
         wtopen_args = 'create'
         if hasattr(self, 'cache_size'):
             wtopen_args += ',cache_size=' + str(self.cache_size)
-        conn = wiredtiger.wiredtiger_open(dir, wtopen_args)
+        conn = self.wiredtiger_open(dir, wtopen_args)
         self.pr(`conn`)
         return conn