Various fixes

[emmanuelm41]

• Add beacon id to some missing log lines
• Update go version on Dockerfile (required to build docker image with new os package)

[willscott]

# github.com/drand/drand/demo/node
demo/node/node_inprocess.go:164:24: not enough arguments in call to cl.InitDKG
	have ("github.com/drand/drand/net".Peer, nil, string)
	want ("github.com/drand/drand/net".Peer, *drand.EntropyInfo, string, string)
demo/node/node_inprocess.go:197:34: not enough arguments in call to cl.InitReshareLeader
	have (int, int, time.Duration, number, string, string, int)
	want (int, int, time.Duration, time.Duration, string, string, int, string)
demo/node/node_inprocess.go:200:28: not enough arguments in call to cl.InitReshare
	have ("github.com/drand/drand/net".Peer, string, string, bool)
	want ("github.com/drand/drand/net".Peer, string, string, bool, string)