Add Preset Management UI

[floreks]

What this PR does / why we need it:

• List presets for all providers
• List presets for the selected provider
  • Filter by datacenter
• Create a preset for the provider
  • Restrict preset to selected datacenter
  • Mark created preset as enabled/disabled
• Update (override) existing provider preset information
  • Enable/disable preset
  • Update/remove datacenter restriction

Which issue(s) this PR fixes:
Fixes #2798

Release note:

Added Preset management UI to the admin settings.

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: floreks

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• OWNERS [floreks]

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[codecov]

Codecov Report

Merging #2880 (f9a8f2f) into master (5bd1e95) will decrease coverage by 0.01%.
The diff coverage is 20.00%.

@@            Coverage Diff             @@
##           master    #2880      +/-   ##
==========================================
- Coverage   52.39%   52.37%   -0.02%     
==========================================
  Files         237      237              
  Lines        8201     8519     +318     
  Branches      985     1060      +75     
==========================================
+ Hits         4297     4462     +165     
- Misses       3901     4054     +153     
  Partials        3        3              

Impacted Files	Coverage Δ
src/app/shared/validators/base-form.validator.ts	63.63% <0.00%> (-14.15%)	⬇️
src/app/wizard/service/wizard.ts	20.00% <ø> (ø)
src/app/core/services/wizard/presets.service.ts	27.86% <5.88%> (-6.75%)	⬇️
src/app/shared/model/NodeProviderConstants.ts	63.63% <33.33%> (-2.22%)	⬇️
src/app/wizard/config.ts	87.50% <66.66%> (-12.50%)	⬇️
...ccount-token/add-serviceaccount-token.component.ts	50.00% <0.00%> (-12.07%)	⬇️
...count-token/edit-serviceaccount-token.component.ts	62.96% <0.00%> (-10.96%)	⬇️
...ettings/admin/admins/add-admin-dialog/component.ts	28.57% <0.00%> (-8.93%)	⬇️
src/app/shared/components/combobox/component.ts	36.25% <0.00%> (-8.40%)	⬇️
src/app/testing/fake-data/node.fake.ts	62.50% <0.00%> (-5.69%)	⬇️
... and 17 more

---

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[floreks]

/retest

[floreks]

/retest

[maciaszczykm]

A lot of work done here 👍🏻 Codewise I have only one remark, I will do some more manual tests.

[maciaszczykm]

/lgtm

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 5816bb51ad23c4062d9587e81001e09dc9bfcfae