Improve error message when using a "K10" prefixed token

[dereknola]

Signed-off-by: dereknola derek.nola@suse.com

Proposed Changes

Improve the error message a user receives when accidentally providing a "K10" prefixed token on the first (or single node) K3s server.

Types of Changes

Enhancement

Verification

• Run K3s server with K10 token

$ k3s server --token=K10THISISATEST

• Observe the error message:

panic: failed to normalize token; must be in format K10<CA-HASH>::<USERNAME>:<PASSWORD> or <PASSWORD>

Linked Issues

#4169

User-Facing Change

Further Comments

[codecov-commenter]

Codecov Report

Merging #4180 (3000c3e) into master (12e675e) will decrease coverage by 0.19%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4180      +/-   ##
==========================================
- Coverage   11.66%   11.46%   -0.20%     
==========================================
  Files         134      134              
  Lines        9055     9242     +187     
==========================================
+ Hits         1056     1060       +4     
- Misses       7773     7956     +183     
  Partials      226      226              

Flag	Coverage Δ
inttests	0.67% <ø> (-0.02%)	⬇️
unittests	11.12% <ø> (-0.19%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/cluster/storage.go	0.00% <ø> (ø)
pkg/bootstrap/bootstrap.go	20.51% <0.00%> (-3.02%)	⬇️
pkg/cluster/cluster.go	0.00% <0.00%> (ø)
pkg/cli/server/server.go	0.00% <0.00%> (ø)
pkg/cluster/bootstrap.go	0.00% <0.00%> (ø)
pkg/servicelb/controller.go	0.00% <0.00%> (ø)
tests/util/runtime.go	57.14% <0.00%> (+7.14%)	⬆️

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