chore(appengine/flexible): fix missed exclude tests (GoogleCloudPlatform#1281)

Author: Ace Nassri

appengine/flexible/supervisord/addition/phpunit.xml.dist

@@ -18,6 +18,7 @@
     <testsuites>
         <testsuite>
             <directory>test</directory>
+            <exclude>test/DeployTest.php</exclude>
         </testsuite>
     </testsuites>
     <logging>

appengine/flexible/supervisord/replacement/phpunit.xml.dist

@@ -18,6 +18,7 @@
     <testsuites>
         <testsuite>
             <directory>test</directory>
+            <exclude>test/DeployTest.php</exclude>
         </testsuite>
     </testsuites>
     <filter>