Fix typo in command

[allanchau]

What this PR does / why we need it:

Fixes the command for checking if ingress controller pods have started.

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

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: allanchau
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[allanchau]

/assign @aledbf

[codecov-io]

Codecov Report

Merging #2641 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2641   +/-   ##
=======================================
  Coverage   40.69%   40.69%           
=======================================
  Files          75       75           
  Lines        5123     5123           
=======================================
  Hits         2085     2085           
  Misses       2756     2756           
  Partials      282      282

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[antoineco]

@allanchau thanks!
Do you mind if I cherry-pick this into #2368?

[aledbf]

Closing. This is correct. Please check https://github.com/kubernetes/ingress-nginx/blob/master/deploy/mandatory.yaml#L237

[aledbf]

 kubectl get pods --all-namespaces -l app=ingress-nginx --watch
NAMESPACE       NAME                                        READY     STATUS    RESTARTS   AGE
ingress-nginx   nginx-ingress-controller-58c9df5856-bzmk4   1/1       Running   0          1d

[allanchau]

@aledbf I used helm to install ingress helm install stable/nginx-ingress and kubectl get pods --all-namespaces -l app=ingress-nginx --watch didn't seem to pick up anything.

@antoineco No problem, as long as you guys are happy with it 😄

[aledbf]

@allanchau ok, the docs in this repository are for the code and deployment provided here.
The helm chart is not part of this project but developed by other part of the community.

Edit: maybe the chart could change the labels