Improve the VPA's local dev and test scripts

[adrianmoisey]

The VPA's scripts for running e2e tests locally are out dated and don't work on modern Apple Silicon Macs.

There are also some quality of life improvements that could be done to make testing and local dev easier and neater, for example this 15 minute sleep could be improved on.

I plan to start tidying this area of the VPA up, making it easier and better to run tests.

/area vertical-pod-autoscaler
/assign

Some ideas:

1. Make e2e tests run locally ✅
2. Speed up e2e tests (some sleeps don't make much sense to keep) ✅
3. Remove unnecessary logs (lots of warnings are outputted)
4. Improve documentation on running tests
5. Improve scripts (how much reusability can we get between local and non-local e2e scripts?)
6. Bump metrics-server

Tasks

Beta Give feedback

1. Remove Docker build warnings #7457
   approved area/vertical-pod-autoscaler cncf-cla: yes kind/cleanup lgtm size/S +6
   

   
2. Modify the e2e local scripts so they can be run on a modern Mac #7456
   approved area/vertical-pod-autoscaler cncf-cla: yes kind/cleanup lgtm size/L +6
   

   
3. VPA: Try make recommender e2e a little faster #7483
   area/vertical-pod-autoscaler cncf-cla: yes kind/cleanup lgtm size/M +5
   
4. VPA: e2e Update metrics-server version to 0.7.2 #7488
   area/vertical-pod-autoscaler cncf-cla: yes kind/cleanup lgtm size/M +5
   

[adrianmoisey]

/kind cleanup
/remove-kind feature

[Shubham82]

/triage accepted