Make certificates per-profile and consistent until IP or names change

[tstromberg]

This avoids the bug where we unnecessarily crash a running apiserver by reprovisioning its certificates.

This speeds up "minikube start" on a running cluster substantially, because components no longer go into CrashLoopBackOff due to certificate changes.

Fixes #7102 and #5353

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tstromberg

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [tstromberg]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[tstromberg]

/ok-to-test

[minikube-pr-bot]

Error: running mkcmp: exit status 1

[codecov-io]

Codecov Report

Merging #7125 into master will increase coverage by 0.08%.
The diff coverage is 67.61%.

@@            Coverage Diff             @@
##           master    #7125      +/-   ##
==========================================
+ Coverage   36.96%   37.05%   +0.08%     
==========================================
  Files         145      145              
  Lines        9165     9208      +43     
==========================================
+ Hits         3388     3412      +24     
- Misses       5359     5374      +15     
- Partials      418      422       +4     

Impacted Files	Coverage Δ
pkg/minikube/localpath/localpath.go	15.15% <0.00%> (-2.09%)	⬇️
pkg/minikube/bootstrapper/certs.go	73.41% <73.19%> (-0.48%)	⬇️
pkg/minikube/machine/delete.go	44.11% <0.00%> (-1.34%)	⬇️

[minikube-pr-bot]

All Times Minikube (PR 7125): [ 68.207810 67.670353 67.352638]
All Times minikube: [ 65.631224 64.619664 68.702739]

Average minikube: 66.317876
Average Minikube (PR 7125): 67.743600

Averages Time Per Log

+----------------------+-----------+--------------------+
|         LOG          | MINIKUBE  | MINIKUBE (PR 7125) |
+----------------------+-----------+--------------------+
| minikube v           |  0.235347 |           0.217478 |
| Creating kvm2        | 42.340425 |          42.071736 |
| Preparing Kubernetes | 21.646332 |           1.761152 |
| Pulling images       |           |                    |
| Launching Kubernetes |           |          21.469769 |
| Waiting for cluster  |  0.413117 |           0.244648 |
+----------------------+-----------+--------------------+

[tstromberg]

Looks like a recent commit to this broke kubeconfig. Will investigate.

[minikube-pr-bot]

All Times minikube: [ 68.000250 67.388954 68.541432]
All Times Minikube (PR 7125): [ 71.048715 71.694202 71.342800]

Average minikube: 67.976879
Average Minikube (PR 7125): 71.361906

Averages Time Per Log

+----------------------+-----------+--------------------+
|         LOG          | MINIKUBE  | MINIKUBE (PR 7125) |
+----------------------+-----------+--------------------+
| minikube v           |  0.263949 |           0.224058 |
| Creating kvm2        | 43.484742 |          43.741031 |
| Preparing Kubernetes | 22.073953 |          24.910341 |
| Pulling images       |           |                    |
| Launching Kubernetes |           |                    |
| Waiting for cluster  |  0.263157 |           0.585847 |
+----------------------+-----------+--------------------+