Architecure icons not working

[rgoubet]

The bug reported here also affects the CLI program.

See the following code:

architecture-beta
    group api(logos:aws-lambda)[API]

    service db(logos:aws-aurora)[Database] in api
    service disk1(logos:aws-glacier)[Storage] in api
    service disk2(logos:aws-s3)[Storage] in api
    service server(logos:aws-ec2)[Server] in api

    db:L -- R:server
    disk1:T -- B:server
    disk2:T -- B:db

Looking at the SVG code, you can see that, where an iconify logo is expected, only an svg element is inserted, which contains only a rect and a text elements. So it didn't pick anything from iconify as described in the documentation.