Fix get_logs, pod cleanup and XCom push in GKEStartPodOperatorAsync

[bharanidharan14]

• Fix Issue: Support get_logs in GKEStartPodOperatorAsync #811 not showing pod's logs on completion if get_logs is True
  Currently in GKEStartPodOperatorAsync, even though the get_logs attribute is set to True it was not showing the pod's log as in sync operator as expected, now it is fixed extended support to conclude the get_logs attribute once the trigger callback function is executed fetching the container logs from the pod manager if get_logs attribute is set to True.

• Fix Issue Improve GKEStartPodOperatorAsync #451 pod cleanup and XCom push
  Once the trigger callback function is executed after the successful event. Pushed pod name and namespace and result in XCom when do_xcom_push is set to True and cleaning of the pod was also handled.

• Handle the GKEStartPodOperatorAsync status based on the terminal status. Status of GKEStartPodOperatorAsync should reflect pod status. #814
  Currently, GKEStartPodOperatorAsync (and GKEStartPodTrigger) succeeds whenever the pod's state is one of PodPhase.terminal_states, that is either Failed or Succeeded. So by adding condition in the trigger based on the terminal status and returning the failed even when the terminal status is in a failed state.

closes: #811 #451 #814

[codecov]

Codecov Report

Base: 98.53% // Head: 98.54% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (9348101) compared to base (d939f5b).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #824      +/-   ##
==========================================
+ Coverage   98.53%   98.54%   +0.01%     
==========================================
  Files          88       88              
  Lines        4845     4881      +36     
==========================================
+ Hits         4774     4810      +36     
  Misses         71       71              

Impacted Files	Coverage Δ
...oviders/cncf/kubernetes/triggers/wait_container.py	98.63% <100.00%> (ø)
...viders/google/cloud/operators/kubernetes_engine.py	100.00% <100.00%> (ø)
...oviders/google/cloud/triggers/kubernetes_engine.py	100.00% <100.00%> (ø)

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[bharanidharan14]

@pankajastro @pankajkoti @rajaths010494 @phanikumv Need review on this PR

[phanikumv]

Please share logs for all the points you've covered in this implementation

[phanikumv]

PR description isnt as per standards, and has typos. Please correct the same

[bharanidharan14]

[pankajkoti]

LGTM. Have a small question inline.

[bharanidharan14]

PR description isnt as per standards, and has typos. Please correct the same

@phanikumv Fixed it. Can you review it

[phanikumv]

PR description isnt as per standards, and has typos. Please correct the same

@phanikumv Fixed it. Can you review it

Description should be in imperative tense. Please correct it.