restart the event monitor when unhealthy node comes back
restart the event monitor when unhealthy node comes back

Signed-off-by: mountkin <d51735f6fb3b158a0436903895ceec01381bfb9f@gmail.com>

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.io,rancher/swarm,mgoelzer/swarm,fugr/swarm,polyverse-security/swarm,allencloud/swarm,riuvshin/swarm,kyhavlov/swarm,allencloud/swarm,cpuguy83/swarm,londoncalling/docker.github.io,cgvarela/swarm,denverdino/docker.github.io,menglingwei/denverdino.github.io,ehazlett/swarm,thaJeztah/docker.github.io,u2mejc/swarm,atlassian/swarm,bdwill/docker.github.io,raoofm/swarm,rajdeepd/swarm,megamsys/swarm,jimmycmh/swarm,JimGalasyn/docker.github.io,troy0820/docker.github.io,mrjana/swarm,rillig/docker.github.io,xFragger/swarm,JimGalasyn/docker.github.io,denverdino/docker.github.io,shot/swarm,snrism/swarm,NunoEdgarGub1/swarm,CodeNow/swarm,yp-engineering/swarm,joeuo/docker.github.io,rchicoli/swarm,docker-zh/docker.github.io,ealang/swarm,marsmensch/swarm,therealbill/swarm,gradywang/swarm,tranceitionalMynd/swarm,adouang/swarm,kunalkushwaha/swarm,shin-/docker.github.io,PeoplePerHour/libswarm,alexisbellido/docker.github.io,doronp/swarm,sanscontext/docker.github.io,linecheng/swarm,shubheksha/docker.github.io,jimmyxian/swarm,shin-/docker.github.io,ricca742/swarm,PeoplePerHour/libswarm,swarm-hooks/swarm,beni55/swarm-1,londoncalling/docker.github.io,phiroict/docker,therealbill/swarm,docker/docker.github.io,rchicoli/swarm,thaJeztah/docker.github.io,Spritekin/swarm,rillig/docker.github.io,shahankhatch/swarm,EderRoger/swarm,JimGalasyn/docker.github.io,vlajos/swarm,BSWANG/denverdino.github.io,shin-/docker.github.io,jzwlqx/denverdino.github.io,mrjana/swarm,mountkin/swarm,jimenez/swarm,francisbouvier/swarm,LuisBosquez/docker.github.io,abronan/swarm