fix handling of a default 'template' as a string
merged branch lsmith77/fix_include_default_text (PR #8445)

This PR was merged into the 2.2 branch.

Discussion
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Fix include default text

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: [![Build Status](https://travis-ci.org/lsmith77/symfony.png?branch=fix_include_default_text)](https://travis-ci.org/lsmith77/symfony)
Fixes the following tickets: -
License of the code: MIT

Commits
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9d1004b fix handling of a default 'template' as a string