test remount-secure script and systemd unit #203

Developer discussion. Not for users since not the in the testers repository yet.

Based suggestions in #202 thanks to @monsieuremre, recently I have improved.

• systemd unit file: https://github.com/Kicksecure/security-misc/blob/master/usr/lib/systemd/system/remount-secure.service
• remount-secure script: https://github.com/Kicksecure/security-misc/blob/master/usr/bin/remount-secure

Enabling it should be as simple as:

sudo systemctl enable remount-secure.service

Risks: Breaking the boot.

Unbreaking the boot?

• A) Booting into recovery mode and disalbing the systemd unit or,
• B) kernel parameter remountsecure=0

might work.