cached composite template are not updated

[davidB]

Steps to reproduce:

• A git repository with several templates already cached
• Add a new template into the repository
• Create a local template that use the newly template from the repository
• Call ffizer apply on the local template

The command failed because the cache of the repository doesn't include the new template.

Output:

$ ffizer apply -s amethyst-starter-2d -d my-game
Error: LocalPathNotFound { path: "/home/david/.cache/git/github.com/ffizer/templates_default/master/oss_license", uri: "git@github.com:ffizer/templates_default.git", subfolder: Some("oss_license") }

[davidB]

should be fixed