Extended warning events recognition

[floreks]

I've added more partial strings indicating that event reason message is a warning or an error. It's based mostly on this file:
https://github.com/kubernetes/kubernetes/blob/53f0f9d59860131c2be301a0054adfc86e43945d/pkg/kubelet/container/event.go

[codecov-io]

Current coverage is 81.52%

Merging #424 into master will not affect coverage as of 437a59e

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  Files           76      76       
  Stmts          617     617       
  Branches         0       0       
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  Hit            503     503       
  Partial          0       0       
  Missed         114     114       

Review entire Coverage Diff as of 437a59e

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[bryk]

One comment and

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Reviewed 1 of 2 files at r1.
Review status: 1 of 2 files reviewed at latest revision, 1 unresolved discussion.

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src/app/backend/eventscommon.go, line 31 [r1] (raw file):
outof - there is no such word?

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Comments from the review on Reviewable.io

[floreks]

Review status: 1 of 2 files reviewed at latest revision, 1 unresolved discussion.

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src/app/backend/eventscommon.go, line 31 [r1] (raw file):
It may not be a word but there is an event reason OutOfDisk so potentially there may be OutOfCPU OutOfSpace OutOfResources etc. It is only partial string.

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Comments from the review on Reviewable.io

[bryk]

Reviewed 1 of 2 files at r1.
Review status: all files reviewed at latest revision, 1 unresolved discussion.

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src/app/backend/eventscommon.go, line 31 [r1] (raw file):

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Comments from the review on Reviewable.io