cc send fails when using wildcards

[jacdavi]

Describe your environment

1. minimega version: latest master
2. Linux distro/version: Ubuntu 18.04
3. Go compiler version: 1.18.4
4. VM types: N/A

Describe the bug
cc send commands fail when a wildcard is included (e.g., cc send *.txt.)

minimega:/tmp/minimega/minimega$ file list *.txt
host  | dir | name     | size | modified
ccc19 |     | tmp.txt  | 0    | 2022-09-23T20:27:32Z
ccc19 |     | tmp2.txt | 0    | 2022-09-23T20:27:35Z
minimega:/tmp/minimega/minimega$ cc send *.txt
Error (ccc19): unable to get file *.txt via the mesh: get *.txt: file not found

To Reproduce
Steps to reproduce the behavior:

1. Create multiple files in filepath with the same extension
2. Start minimega and try to run cc send *.extensions

Expected behavior
All files matching the wildcard should be sent without error.

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Some more context here: #1472 (comment)