fixed erroneous LogCodec test cases; re-enabled LogCodec tests that now work due to new features
fixed erroneous LogCodec test cases; re-enabled LogCodec tests that now work due to new features

acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core,acmorrow/pion-core