`import_file` configuration should support globs

[cppforlife]

im using it to push out assets that are typically names blah-(semver).tar. want to specify blah-*.tar to pick up configuration. current workaround is to use a separate task to rename tar to a stable name.

[concourse-bot]

Hi there!

We use Pivotal Tracker to provide visibility into what our team is working on. A story for this issue has been automatically created.

The current status is as follows:

• [ ] #140236185 import_file configuration should support globs
• [ ] #119209321 import_file configuration doesnt support globs

This comment, as well as the labels on the issue, will be automatically updated as the status in Tracker changes.

[jimmykarily]

I'm not sure if it has other implications but simply removing the double quotes from the cat "$import_file" will make it work. I'm facing the same issue.