Optimising the cicd process

[cdmikechen]

The current submarine cicd process involves support for multiple languages and multiple language versions, which makes the entire github workflow take a very long time to process a PR check task.
The languages and versions involved are as follows:

• python: 3.7 3.8 3.9 3.10
• k8s: 1.18.20 1.19.16 1.20.15 1.21.10
• java: 1.8
• go: 1.17.2
• angular: ~8.2.9

Meanwhile, the code coverage checks are only handled for some java codes. For the go, python and angular sections I think we should add/refine to codecov later.

To do this, I created an issue on jira to manage and track related content https://issues.apache.org/jira/browse/SUBMARINE-1336 .

[cdmikechen]

@huang06
Hi~ I have created this issue to follow up on the recent discussion of cicd.
For the python part, I think we should reduce python tasks in first, and then add codecov support. Wish to know what do you think.