[Core] adds vendor/container-interop to the zip/tgz package

Author: cbleek

build.xml

@@ -257,6 +257,7 @@
             <include name="vendor/autoload.php"/>
             <include name="vendor/composer/**"/>
             <include name="vendor/zendframework/**"/>
+            <include name="vendor/container-interop/**"/>
             <include name="vendor/hybridauth/**"/>
             <include name="vendor/doctrine/**"/>
             <include name="vendor/symfony/polyfill-mbstring/**"/>