Fixing docker e2e emissary tests for hello application

[pokearu]

Description of changes:
Emissary docker e2e tests were failing when trying to curl test deployed hello EKS Anywhere application. This worked manually and proved to be a timing issue as we were not giving enough time for the hello app to come up and start serving; hence curl vailed to hit the cluster endpoint.

Testing (if applicable):

./e2e.test -test.v --test.run "TestDockerKubernetes129CuratedPackagesEmissarySimpleFlow"

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[ahreehong]

/woof

[eks-distro-bot]

@ahreehong:

In response to this:

/woof

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.46%. Comparing base (12f8b6b) to head (a0f4191).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7887   +/-   ##
=======================================
  Coverage   73.45%   73.46%           
=======================================
  Files         577      577           
  Lines       35740    35740           
=======================================
+ Hits        26254    26256    +2     
+ Misses       7828     7827    -1     
+ Partials     1658     1657    -1     

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[abhay-krishna]

/lgtm
/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhay-krishna

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[sp1999]

/cherry-pick release-0.19

[eks-distro-pr-bot]

@sp1999: new pull request created: #8622

In response to this:

/cherry-pick release-0.19

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