test(pep0249): Update database name parameters for test PEP0249 support.

Garantees that PEP0249 can test all options for database parameter name
during the connection. For that, the following will be used:

* test_psycopg2.py will test 'dbname'
* test_mysqlclient.py will test 'db'
* test_pymysql.py will test 'database' (since 'db'name is deprecated)

Signed-off-by: Paulo Vital <paulo.vital@ibm.com>

tests/clients/test_psycopg2.py

@@ -19,7 +19,7 @@ class TestPsycoPG2(unittest.TestCase):
     def setUp(self):
         self.db = psycopg2.connect(host=testenv['postgresql_host'], port=testenv['postgresql_port'],
                                    user=testenv['postgresql_user'], password=testenv['postgresql_pw'],
-                                   database=testenv['postgresql_db'])
+                                   dbname=testenv['postgresql_db'])
 
         database_setup_query = """
         DROP TABLE IF EXISTS users;

tests/clients/test_pymysql.py

@@ -17,7 +17,7 @@ class TestPyMySQL(unittest.TestCase):
     def setUp(self):
         self.db = pymysql.connect(host=testenv['mysql_host'], port=testenv['mysql_port'],
                                   user=testenv['mysql_user'], passwd=testenv['mysql_pw'],
-                                  db=testenv['mysql_db'])
+                                  database=testenv['mysql_db'])
         database_setup_query = """
         DROP TABLE IF EXISTS users; |
         CREATE TABLE users(