Add new feature which prints information about new plugins which can be upgraded to

[jxr98]

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[jxr98]

All right. I am gonna fix this.

[codecov-commenter]

Codecov Report

Merging #611 (1ba6052) into master (a99158f) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #611   +/-   ##
=======================================
  Coverage   37.98%   37.98%           
=======================================
  Files          13       13           
  Lines         416      416           
=======================================
  Hits          158      158           
  Misses        246      246           
  Partials       12       12           

Flag	Coverage Δ
unittests	37.98% <ø> (ø)

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[LinuxSuRen]

hi @jxr98 Please pay attention to the conflicts.

[jxr98]

Hi @LinuxSuRen, I've solved the conflicts. By the way, any problem with this pr?

[jxr98]

To use this new feature, a plugin called 'pipeline restful api' needs to be installed in jenkins. I've tested using the command './jcli plugin center'. It's a bit slow because the function is going to check every installed plugins in 'https://plugins.jenkins.io/api/plugin/'. The function only prints information about plugins which have newer versions then the installed.

[jxr98]

Hello Rick. This pr is the second needed to be reviewed.