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Description of problem:
Using curly braces shell-style expansion does not work when using dnf.query.Query.filter (https://dnf.readthedocs.io/en/latest/api_queries.html#dnf.query.Query.filter) with glob keyname.

The documentation linked above says that using glob with the filter means "shell-style wildcard match".
And the dnf man page says in the Globs section "{} Matches any of the comma separated list of enclosed strings."

Version-Release number of selected component (if applicable):
dnf-0:4.2.23-4.el8.noarch
rpm-0:4.14.3-4.el8.x86_64

Steps to Reproduce:
1. Open python3 interpreter on RHEL 8.3
2. Run the following code
```
import dnf
dnf_base = dnf.Base()
dnf_base.fill_sack(load_system_repo=True, load_available_repos=False)
query = dnf_base.sack.query()
installed = query.installed()
installed = installed.filter(name__glob="redhat-{,linux-}release")
if list(installed):
  print(list(installed)[0].name)
else:
  print("Not found")
```

Actual results:
"Not found" is printed. The curly braces are not expanded.

Expected results:
I expect to see "redhat-release".

Additional info:
Running `dnf info redhat-{,linux-}release` gives me info about redhat-release, so the expansion works this way.
Using "*" in the filter works, so if I search for "redhat-*release", it is found.

Allright, this is interesting, I got got by this as well.

We are using the fnmatch() call to match the globs and fnmatch doesn't support curly brackets, it is an extension in bash and possibly other shells. The reason e.g. `dnf info redhat-{,linux-}release` works is because it's actually bash doing the expansion for you.

I've fixed the documentation: https://github.com/rpm-software-management/dnf/pull/1710

We aren't planning on implementing our own fnmach to support curly brackets.

Ok. Thanks, Lukas, for looking into it.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (dnf bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2021:1657