Limit test to mysql 5.7 and up due to SQL syntax

Author: michaelw85

features/config-create.feature

@@ -243,11 +243,11 @@ Feature: Create a wp-config file
       PasswordWith'SingleQuotes'
       """
 
-  @require-mysql
+  @require-mysql-5.7
   Scenario: Configure with required SSL connection
     Given an empty directory
     And WP files
-    And I try `MYSQL_PWD='{DB_ROOT_PASSWORD}' MYSQL_HOST='{MYSQL_HOST}' MYSQL_TCP_PORT='{MYSQL_PORT}' mysql -u root -e "CREATE USER 'wp_cli_test_ssl'@'%' IDENTIFIED BY 'password2' REQUIRE SSL;"`
+    And I run `MYSQL_PWD='{DB_ROOT_PASSWORD}' MYSQL_HOST='{MYSQL_HOST}' MYSQL_TCP_PORT='{MYSQL_PORT}' mysql -u root -e "CREATE USER IF NOT EXISTS 'wp_cli_test_ssl'@'%' IDENTIFIED BY 'password2' REQUIRE SSL;"`
 
     When I try `wp config create --dbhost=127.0.0.1 --dbname=wp_cli_test --dbuser=wp_cli_test_ssl --dbpass=password2 --ssl`
     Then the return code should be 0