Added persistence options for etcd

[danielstankw]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

KusionStack/karpor#347

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

values.yaml
etcd.yaml

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

6. Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[elliotxx]

@danielstankw Your actions are so fast, let me test it first 👍

[elliotxx]

@danielstankw Hi, I used default parameters for installation, but I seem to have encountered an problem:

[danielstankw]

@elliotxx have you specified the storageClassName?

[elliotxx]

@elliotxx have you specified the storageClassName?

@danielstankw I don’t specify storageClassName, but I understand it should work normally. In fact, I am doing a regression test.

[elliotxx]

@danielstankw Hi, I haven't seen any progress on this PR recently. Do you need me to provide more information?

[elliotxx]

@danielstankw Hi, PR #50 provides basic and compatible support for persistence. Can you continue to optimize on this basis?

[danielstankw]

Hi @elliotxx
My sincere apologies for lack of reply.
I am currently overloaded with some tasks, would love to return to the project when I find time but for now if you want to get it done sooner, I suggest someone takes over.

[elliotxx]

@danielstankw Bro, I'm sorry to disturb you. Of course, you should first focus on your work. I understand very well. I'm just not sure if I provided enough information that caused you to get stuck somewhere. If it's convenient for you, please feel free to come back anytime! We think your feedback and contribution are very important.