adapt to centos and haproxy 2.0.0#1

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chrismaes87 wants to merge 2 commits intoelafarge:masterfrom

chrismaes87:master

Commits on Jun 20, 2019

don't hardcode path to docker and docker-compose; paths are /bin/docker and /usr/local/bin/docker-compose on centos
Chris Maes
committed
servers state output got a little longer; don't fail deployment therefor
Chris Maes
committed