Fix the communication issue between ks-devops and Jenkins

[LinuxSuRen]

There're three changes you can find in this PR:

• provide a constant password for the admin user
• make the default security realm be local instead of LDAP
  • we will support OIDC later
• provide a correct server address for the KubeSphere token server

[codecov-commenter]

Codecov Report

Merging #34 (4e3cb7e) into master (22926b5) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master     #34   +/-   ##
======================================
  Coverage    4.98%   4.98%           
======================================
  Files          64      64           
  Lines       19996   19996           
======================================
  Hits          996     996           
  Misses      18931   18931           
  Partials       69      69           

Flag	Coverage Δ
unittests	4.98% <ø> (ø)

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

Impacted Files	Coverage Δ
pkg/client/k8s/kubernetes.go	10.52% <0.00%> (ø)

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[LinuxSuRen]

hi @JohnNiang , please help me to review this PR. Thanks!

[JohnNiang]

hi @JohnNiang , please help me to review this PR. Thanks!

WIP.

[JohnNiang]

LGTM