Fix thrift-server-test: SslTest.Connectivity
Fix thrift-server-test: SslTest.Connectivity

The test creates 2 clients, ssl_client and non_ssl_client. However,
instead of opening each client once, it opens ssl_client twice. This
patch fixes that.

Change-Id: I3779f086f180fcc122e307a37ff8eaf9ecfd31f6
Reviewed-on: http://gerrit.cloudera.org:8080/1626
Reviewed-by: Henry Robinson <3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com>
Tested-by: Internal Jenkins

kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala,kapilrastogi/Impala