Added docker-* logs to diagnostic snapshot
Added docker-* logs to diagnostic snapshot

Added directory `/var/log/docker-logs` and
files `/var/log/docker-*.log` from master
node.

Change-Id: I412939a28162dfb06866080ec9a8596685080969
Related-bug: #1314907

koder-ua/nailgun-fcert,zhaochao/fuel-web,eayunstack/fuel-web,koder-ua/nailgun-fcert,zhaochao/fuel-web,koder-ua/nailgun-fcert,nebril/fuel-web,nebril/fuel-web,prmtl/fuel-web,SmartInfrastructures/fuel-web-dev,SmartInfrastructures/fuel-web-dev,zhaochao/fuel-web,nebril/fuel-web,huntxu/fuel-web,zhaochao/fuel-web,prmtl/fuel-web,stackforge/fuel-web,prmtl/fuel-web,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,koder-ua/nailgun-fcert,nebril/fuel-web,huntxu/fuel-web,zhaochao/fuel-web,eayunstack/fuel-web,SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,stackforge/fuel-web,huntxu/fuel-web,stackforge/fuel-web,prmtl/fuel-web,nebril/fuel-web,eayunstack/fuel-web,prmtl/fuel-web,eayunstack/fuel-web,eayunstack/fuel-web