(feat) Added support to update the experiment Statuses for Aborted Experiments

[rahulchheda]

What this PR does / why we need it:

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Checklist:

• Fixes #
• Labelled this PR & related issue with documentation tag
• PR messages has document related information
• Labelled this PR & related issue with breaking-changes tag
• PR messages has breaking changes related information
• Labelled this PR & related issue with requires-upgrade tag
• PR messages has upgrade related information
• Commit has unit tests
• Commit has integration tests

[ksatchit]

WIP

[rahulchheda]

Sample Aborted ChaosEngine:

rahul_chheda_mayadata_io@rahulchheda:~$ kubectl describe chaosengine engine -n litmus
Name:         engine
Namespace:    litmus
Labels:       <none>
Annotations:  kubectl.kubernetes.io/last-applied-configuration:
                {"apiVersion":"litmuschaos.io/v1alpha1","kind":"ChaosEngine","metadata":{"annotations":{},"name":"engine","namespace":"litmus"},"spec":{"a...
API Version:  litmuschaos.io/v1alpha1
Kind:         ChaosEngine
Metadata:
  Creation Timestamp:  2020-03-27T10:57:00Z
  Generation:          12
  Resource Version:    20233008
  Self Link:           /apis/litmuschaos.io/v1alpha1/namespaces/litmus/chaosengines/engine
  UID:                 af4061f9-7019-11ea-a13d-42010a800199
Spec:
  Appinfo:
    Appkind:              deployment
    Applabel:             app=nginx
    Appns:                test
  Chaos Service Account:  litmus
  Components:
    Monitor:
      Image:  
    Runner:
      Image:              rahulchheda1997/chaos-runner:ci
      Image Pull Policy:  Always
  Engine State:           stop
  Experiments:
    Name:  pod-delete
    Spec:
      Components:
      Rank:             0
  Job Clean Up Policy:  retain
  Monitoring:           true
Status:
  Engine Status:  stopped
  Experiments:
    Last Update Time:  2020-03-27T10:57:38Z
    Name:              pod-delete-xh4uom
    Status:            Forcefully Aborted
    Verdict:           Stopped
Events:
  Type    Reason                     Age   From            Message
  ----    ------                     ----  ----            -------
  Normal  ChaosEngineInitialized     47s   chaos-operator  engine-runner created successfully
  Normal  ExperimentDependencyCheck  44s   engine-runner   Experiment resources validated for Chaos Experiment: 'pod-delete'
  Normal  ExperimentJobCreate        39s   engine-runner   Experiment Job 'pod-delete-xh4uom' created for Chaos Experiment 'pod-delete'
  Normal  ChaosEngineStopped         8s    chaos-operator  Chaos resources deleted successfully

[codecov]

Codecov Report

Merging #160 into master will decrease coverage by 0.26%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #160      +/-   ##
==========================================
- Coverage   18.52%   18.25%   -0.27%     
==========================================
  Files           1        1              
  Lines         475      482       +7     
==========================================
  Hits           88       88              
- Misses        380      387       +7     
  Partials        7        7

Impacted Files	Coverage Δ
...g/controller/chaosengine/chaosengine_controller.go	18.25% <0%> (-0.27%)	⬇️

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