Smooth upgrade mount pod

[zwwhdls]

1. trigger upgrade in dashboard
2. smooth upgrade mount pod in csi

close #1111
close #1123

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 24.18426% with 395 lines in your changes missing coverage. Please review.

Project coverage is 27.58%. Comparing base (489d406) to head (bbc94e5).
Report is 12 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/k8sclient/client.go	12.71%	103 Missing ⚠️
pkg/controller/pod_driver.go	38.65%	68 Missing and 5 partials ⚠️
pkg/dashboard/pod.go	0.00%	52 Missing ⚠️
pkg/juicefs/mount/builder/job.go	0.00%	52 Missing ⚠️
pkg/util/resource/terminal.go	0.00%	30 Missing ⚠️
pkg/config/config.go	0.00%	18 Missing ⚠️
pkg/util/resource/pod.go	0.00%	17 Missing ⚠️
pkg/util/resource/job.go	0.00%	16 Missing ⚠️
pkg/juicefs/mount/pod_mount.go	14.28%	11 Missing and 1 partial ⚠️
pkg/util/util.go	86.56%	9 Missing ⚠️
... and 6 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1107      +/-   ##
==========================================
- Coverage   28.15%   27.58%   -0.58%     
==========================================
  Files          51       51              
  Lines        6893     7319     +426     
==========================================
+ Hits         1941     2019      +78     
- Misses       4746     5096     +350     
+ Partials      206      204       -2     

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