Backport of Add refreshes and retries to server-acl-init job into release/1.1.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #3137 to be assessed for backporting due to the inclusion of the label backport/1.1.x.

🚨

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The person who merged in the original PR is:
@curtbushko
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: POST https://api.github.com/repos/hashicorp/consul-k8s/merges: 409 Merge conflict []

The below text is copied from the body of the original PR.

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Changes proposed in this PR:

• When the server-acl-init job runs it boostraps ACL tokens and sets a bunch of things on the server up
• It gets the static IPs for the servers, creates a boostrap token and sets a policy using that IP
• Then consul-server-connection-manager runs and other ACLs get set up using the consul client
• Usually this is fine.
• But during upgrades the servers statefulsets can change and thus the server IPs change.
• Our code was set to retry over and over again and would eventually timeout after 10 minutes
• This does not work as it forces customers to run the upgrades several times in hopes that the server IPs do not change.
• I've created a wrapper around the consul client called DynamicClient that allows you to refresh the IPs using consul-server-connection-manager
• The DynamicClient will be useful in other place also.
• A customer reported a single error but in my testing I discovered about 5 other places where the IPs would be incorrect and we needed to refresh.
• The key areas are around 'untilSucceeds()' as these consul calls would fail forever

How I've tested this PR:

• Added a unit test to DynamicClient that simulates a bad server ip, a refresh with a good ip and a client call.
• The race condition does not occur all the time but I have been able to reproduce it manually by upgrading over and over again, which sometimes forces the servers to change IPs.

How I expect reviewers to test this PR:

👀

Checklist:

• Tests added
• CHANGELOG entry added

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Overview of commits

• 3ada3ff

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