kompose convert panic on v1 compose file

[janetkuo]

Converting examples/docker-compose.yml to k8s...

$ kompose convert 
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x8 pc=0x46be8a]

It's because of this line which references Networks (which is nil, since it's v1 compose file):

//FIXME: networks always contains one default element, even it isn't declared in compose v2.
if len(composeServiceConfig.Networks.Networks) > 0 &&

@surajssd we need to add those example files to the test

[janetkuo]

Fixing in #103, still need tests

[ngtuna]

Super @janetkuo . I saw this panic error last night but immediately had to go to sleep so didn't fix.Thanks for your quick react 👍

[ngtuna]

This issue also stopped me to finish my PR #91.

[janetkuo]

This is fixed now