[misc] test stability improvement for mysql server

.travis.yml

@@ -10,7 +10,7 @@ before_install:
   - export PATH="$PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH"
   # install c dependency
   - |-
-    if [ "$TRAVIS_OS_NAME" != "osx" ] ; then
+    if [ "$TRAVIS_OS_NAME" == "linux" ] ; then
       sudo apt-get install software-properties-common
       sudo apt-get install -f libssl-dev libssl1.1
       sudo apt-get install -f

testing/test/integration/test_cursor.py

@@ -1348,7 +1348,7 @@ def test_conpy178(self):
         for i in range(0, 500):
             cursor.callproc("p2", ("foo", "bar", 1))
             row = cursor.fetchone()
-            self.assertEqual(row[0], "foobar")
+            self.assertEqual(row[0], (b"foobar","foobar")[is_mysql()])
 
         conn.close()
 
@@ -1523,7 +1523,8 @@ def test_conpy225(self):
 
         cursor.executemany("INSERT INTO x01 VALUES (?,?)", params)
         self.assertEqual(cursor.rowcount, 4)
-        self.assertEqual(cursor.affected_rows, 4)
+        if (not is_mysql()):
+            self.assertEqual(cursor.affected_rows, 4)
 
         cursor.execute("UPDATE x01 SET a=1 WHERE a=1")
         self.assertEqual(cursor.rowcount, 0)