Description of problem:
When using the include directive in the [main] section, TuneD improperly processes profile included when profile names end in non word characters such as '-', '^', ...

Version-Release number of selected component (if applicable):
All, including the current upstream version.

How reproducible:
Always.

Steps to Reproduce:
1. Create TuneD profile "bz" with the following content.
[main]
summary=PoC
include=provider-,balanced

2. Create en empty "provider-" profile:
mkdir -p /etc/tuned/provider-/
touch /etc/tuned/provider-/tuned.conf 

3. systemctl stop tuned --now

4. tuned --no-dbus

Actual results:
2021-10-27 13:43:50,984 INFO     tuned.daemon.application: dynamic tuning is globally disabled
2021-10-27 13:43:50,989 DEBUG    tuned.daemon.daemon: initializing daemon
2021-10-27 13:43:50,989 INFO     tuned.daemon.daemon: using sleep interval of 1 second(s)
2021-10-27 13:43:50,989 INFO     tuned.daemon.daemon: Running in automatic mode, checking what profile is recommended for your configuration.
2021-10-27 13:43:50,990 INFO     tuned.daemon.daemon: Using 'bz' profile
2021-10-27 13:43:50,991 INFO     tuned.profiles.loader: loading profile: bz
2021-10-27 13:43:50,993 ERROR    tuned.daemon.daemon: Cannot set initial profile. No tunings will be enabled: Cannot load profile(s) 'bz': Cannot find profile 'provider-,balanced' in '['/etc/tuned', '/usr/lib/tuned']'.
2021-10-27 13:43:50,993 INFO     tuned.daemon.controller: starting controller

Expected results:
TuneD profiles "provider-" and "balanced" successfully applied.