Add test cases for Tiny containers

Split check-tiny-*-container test case and add some new tests:

• basic functionality
• folder mapping
• device mapping
• AppArmor enforcement
• AppArmot connectivity profile
• custom seccomp policy

Test: https://lava.collabora.co.uk/scheduler/job/1525149 (aa_embedded* were failed since tarball not includes bin.dbus-daemon aa profile yet)