Bug: cannot enable forwarding

The code compared a boolean variable with the string "true". This
does not work as expected.
Merge pull request #21 from kurthuwig/fix/cannot-enable-forwarding

Bug: cannot enable forwarding
bugfix: remove module lockdown for now

we need to boil down the supported operating systems to have this in, otherwise it blocks sysctl reloads

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge pull request #22 from TelekomLabs/fix_module_lockdown

bugfix: remove module lockdown for now
don't track checksums in metadata.json

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
Merge pull request #23 from TelekomLabs/metadata_update

don't track checksums in metadata.json