dnf package provider should support modularity streams

The dnf package provider should be updated to support the execution of `dnf module` commands such as

   # dnf module install httpd:2.4/minimal

Some relevant information from the dnf(8) man page:

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Module Command
Module subcommands take <module-spec> that specify modules or profiles.

dnf [options] module install <module-spec>...
Install module profiles incl. their RPMs. In case no profile was provided, all default profiles get
installed. Module streams get enabled accordingly.

This command cannot be used for switching module streams. It is recommended to remove all installed
content from the module, and reset the module using reset command. After you reset the module, you
can install the other stream.

dnf [options] module update <module-spec>...
Update RPMs in installed module profiles. In case no profile was provided, all installed profiles
get updated.

dnf [options] module remove <module-spec>...
Remove installed module profiles incl. their RPMs. In case no profile was provided, all installed
profiles get removed.

dnf [options] module enable <module-spec>...
Enable a module stream and make the stream RPMs available in the package set.

Modular dependencies are resolved, dependencies checked and also recursively enabled. In case of mod‐
ular dependency issue the operation will be rejected. To perform action anyway please use -‐
-skip-broken option.

This command cannot be used for switching module streams. It is recommended to remove all installed
content from the module, and reset the module using reset command. After you reset the module, you
can enable the other stream.

dnf [options] module disable <module-spec>...
Disable a module. All related module streams will become unavailable. In case of modular dependency
issue the operation will be rejected. To perform action anyway please use --skip-broken option.
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