chore: update xline pod of ci,add probe,volume and security config.

[liangyuanpeng]

Please briefly answer these questions:

• what problem are you trying to solve? (or if there's no problem, what's the motivation for this change?)

The content is basically copied from etcd pod yaml,happy to update it if we have better config.

• what changes does this pull request make?

• are there any non-obvious implications of these changes? (does it break compatibility with previous versions, etc)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.13%. Comparing base (e35b35a) to head (5a00680).
Report is 49 commits behind head on master.

❗ Current head 5a00680 differs from pull request most recent head 6cc1026. Consider uploading reports for the commit 6cc1026 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #745      +/-   ##
==========================================
- Coverage   75.55%   75.13%   -0.42%     
==========================================
  Files         180      176       -4     
  Lines       26938    26852      -86     
  Branches    26938    26852      -86     
==========================================
- Hits        20353    20176     -177     
- Misses       5366     5465      +99     
+ Partials     1219     1211       -8     

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[liangyuanpeng]

This probably requires a better one, but I haven't found one. Remind me if i missed something,Thanks.

[liangyuanpeng]

Basically, this requires the application to have /readyz and /livez interfaces. etcd is also implement the grpc for it etcd-io/etcd@293f087#diff-ab6fb0684315e16355f6ebe0f4b3cf860b9b2ff5a0fe1b4e4308a680b19f1b0c

[liangyuanpeng]

cc @Phoenix500526 @bsbds
PTAL,Thanks.

[liangyuanpeng]

kindly ping :)