Filtering for log stream

[bquenin]

#11

In order to test this PR:

./swarm stop
./swarm pull
./swarm start --min

In order to circumvent an issue (#69) in accessing kafka from amplifier, you need add kafka container hostname to your machine /etc/host.

Getting kafka hostname:

docker ps
docker inspect kafka_container_id | grep hostname
sudo cat /var/lib/docker/containers/a4424bcafbab110b67922994243aca15fc57ab3422fdec21f7460fe16b024456/hostname

Update /etc/hosts in order to assign 127.0.0.1 to kafka hostname:

127.0.0.1   localhost a4424bcafbab

Then test as follows:

make
amplifier
amp logs --f
amp logs --f --short

[subfuzion]

@bertrand-quenin Just letting you know I'll go ahead and resolve the conflicts so we can get the PR merged asap.

[subfuzion]

Testing notes:

Swarm can be stopped, updated, and restarted with ./swarm restart --min.

Kafka hostname can be obtained with: docker ps --filter "name=kafka\." --format '{{ .ID }}'.

Start server with auth keys: amplifier --clientid=<id> --clientsecret=<secret>.

Flags are now -f, --follow, -s, --short.

[subfuzion]

Rebased, resolved conflicts, and squashed. The rest looks good, nice work @bertrand-quenin.