local up install karmada by helm

[chaosi-zju]

What type of PR is this?

/kind feature

What this PR does / why we need it:

• A script using just one command to build multi-clusters by karmada helm chart
• A CI test to install karmada by helm chart

This script can also execute on macOS

Which issue(s) this PR fixes:

Fixes #4305

Special notes for your reviewer:

• if you already has clusters in real environment, please modify hack/local-up-karmada-helm.sh as：

# NEED_CREATE_KIND_CLUSTER customize whether you need to create clusters by kind, if you have clusters already, please unset this option
NEED_CREATE_KIND_CLUSTER=false

# LOAD_IMAGE_IN_ADVANCE if you fetch images in advance and you are using KinD clusters, may be you'd like to load it to KinD in advance too
LOAD_IMAGE_IN_ADVANCE=false

# IMAGE_FROM customize whether you need fetch images in advance, if you don't need, left empty
IMAGE_FROM=""

then, provided your given cluster name and kubeconfig just like:

KARMADA_HOST_NAME="karmada-host"
KARMADA_HOST_KUBECONFIG="${HOME}/.kube/karmada.config"

declare -A PUSH_MODE_MEMBERS
PUSH_MODE_MEMBERS["member1"]="${HOME}/.kube/member1.config"
PUSH_MODE_MEMBERS["member3"]="${HOME}/.kube/member3.config"

declare -A PULL_MODE_MEMBERS
PULL_MODE_MEMBERS["member2"]="${HOME}/.kube/member2.config"

• if you need we to help you create several kind clusters, keep unchanged

---

Execute the script:

hack/local-up-karmada-helm.sh

You will see:

Does this PR introduce a user-facing change?:

none

[karmada-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (e2c6ece) 51.90% compared to head (97eb5d2) 51.89%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4045      +/-   ##
==========================================
- Coverage   51.90%   51.89%   -0.01%     
==========================================
  Files         243      243              
  Lines       24146    24146              
==========================================
- Hits        12532    12531       -1     
- Misses      10931    10932       +1     
  Partials      683      683              

Flag	Coverage Δ
unittests	51.89% <ø> (-0.01%)	:arrow_down:

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[chaosi-zju]

@RainbowMango comments all resolved~

[chaosi-zju]

@jwcesign have a look again~

[chaosi-zju]

CC @RainbowMango ready to merge

by this PR, we can install current code by helm method in CI