Merge pull request #319 from richard67/3.x-dev-fix-phpunit-appveyor-sql2017

[3.x] Use directory Tests/Sqlsrv in phpunit.appveyor_sql2017.xml.dist to fix failing AppVeyor

Author: HLeithner

phpunit.appveyor_sql2017.xml.dist

@@ -13,7 +13,7 @@
 	</php>
 	<testsuites>
 		<testsuite name="Unit">
-			<directory>Tests</directory>
+			<directory>Tests/Sqlsrv</directory>
 		</testsuite>
 	</testsuites>
 </phpunit>