Disable nton encryption if ntonencryption is not enabled

by test. Currently for each test teardown nton is disabled
by default.

Change-Id: I1ec8d3a0732e1e6199d39b2f202f1a9d76efbbe2
Reviewed-on: http://review.couchbase.org/124225
Reviewed-by: Balakumaran G <balakumaran.gopal@couchbase.com>
Tested-by: Ritam Sharma <ritam@couchbase.com>

Author: ritamcouchbase

pytests/basetestcase.py

@@ -495,7 +495,8 @@ def tearDown(self):
                 BucketOperationHelper.delete_all_buckets_or_assert(self.servers, self)
                 ClusterOperationHelper.cleanup_cluster(self.servers, master=self.master)
                 ClusterOperationHelper.wait_for_ns_servers_or_assert(self.servers, self)
-                ntonencryptionBase().disable_nton_cluster(self.servers)
+                if self.ntonencrypt == 'enable' and not self.x509enable:
+                    ntonencryptionBase().disable_nton_cluster(self.servers)
                 self.log.info("==============  basetestcase cleanup was finished for test #{0} {1} ==============" \
                               .format(self.case_number, self._testMethodName))
         except BaseException: