feat: add cluster backup and recovery api test cases

[cmycoups]

Signed-off-by: cmycoups chen.mengyun@99cloud.net

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[codecov-commenter]

Codecov Report

Merging #504 (b2ca122) into release-1.3 (2482c50) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           release-1.3     #504   +/-   ##
============================================
  Coverage        12.20%   12.20%           
============================================
  Files              110      110           
  Lines            16911    16911           
============================================
  Hits              2064     2064           
  Misses           14600    14600           
  Partials           247      247           

[x893675]

/lgtm
/approve

[kubeclipper-bot]

LGTM label has been added.

Git tree hash: c71f395e97be401354bafb15c5d6a02f435ac27f

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