ignore pods in eviction state

[bavarianbidi]

if a cluster contains some evicted pods, chaoskube will delete this pods. but this isn't any kind of chaos, because these pods are still down for a while.

NAME                             READY     STATUS    RESTARTS   AGE
details-v1-8b76fd56-vg5rl        2/2       Running   0          3d
helloworld-v1-6594dd65f-sl5dm    2/2       Running   0          3d
helloworld-v2-5d75dff749-dp4x6   0/2       Evicted   0          3d
helloworld-v2-5d75dff749-fjrqf   2/2       Running   0          4h
productpage-v1-f45dd5dc8-f6dp8   2/2       Running   0          2d
productpage-v1-f45dd5dc8-pn2v7   0/2       Evicted   0          3d
ratings-v1-5dfd4c6784-j7ctc      2/2       Running   0          3d
reviews-v1-6d6bd67777-82qsw      2/2       Running   0          2d
reviews-v1-6d6bd67777-hzz9v      0/2       Evicted   0          3d
reviews-v2-87b6bd97c-h9jt9       2/2       Running   0          2d
reviews-v2-87b6bd97c-pnb7q       0/2       Evicted   0          3d
reviews-v3-84f474d4c7-x4lbs      2/2       Running   0          3d

[bavarianbidi]

sorry, will close this PR, because i didn't see PR #84 last week