mysql_user: fix user_mod on MySQL(-like) 5.7+ (Fixes #3003) (#5388)

Author: wouteroostervld

database/mysql/mysql_user.py

@@ -339,7 +339,7 @@ def user_mod(cursor, user, host, host_all, password, encrypted, new_priv, append
                     if old_user_mgmt:
                         cursor.execute("SET PASSWORD FOR %s@%s = PASSWORD(%s)", (user, host, password))
                     else:
-                        cursor.execute("ALTER USER %s@%s IDENTIFIED BY %s", (user, host, password))
+                        cursor.execute("ALTER USER %s@%s IDENTIFIED WITH mysql_native_password BY %s", (user, host, password))
                     changed = True
 
         # Handle privileges