HTTP client with authenticated requests, plus misc

[gingi]

• Storage Account Service
• Subscription Service
• Basic form onChange support to allow parameters to detect when other parameters change
• Basic skeleton for specifying parameter dependencies (WIP)
• Fixes some linting warnings
• Updates dependencies
• Minor tweaks and cleanup

[codecov[bot]]

Codecov Report

Merging #2560 (f062af6) into vnext (225140a) will increase coverage by 0.03%. The diff coverage is 71.39%.

:exclamation: Current head f062af6 differs from pull request most recent head 1efdc17. Consider uploading reports for the commit 1efdc17 to get more accurate results

@@            Coverage Diff             @@
##            vnext    #2560      +/-   ##
==========================================
+ Coverage   65.42%   65.46%   +0.03%     
==========================================
  Files        1143     1153      +10     
  Lines       31864    32044     +180     
  Branches     5868     5884      +16     
==========================================
+ Hits        20848    20978     +130     
- Misses      10907    10958      +51     
+ Partials      109      108       -1     

Impacted Files	Coverage Δ
packages/common/src/ui-common/http/http-client.ts	62.96% <ø> (ø)
.../src/ui-react/components/form/list-form-layout.tsx	85.10% <ø> (ø)
...d/src/ui-playground/demo/form/action-form-demo.tsx	33.33% <16.66%> (-16.67%)	:arrow_down:
...ui-service/storage/fake-storage-account-service.ts	17.64% <17.64%> (ø)
...-service/subscription/fake-subscription-service.ts	23.07% <23.07%> (ø)
.../src/ui-common/environment/abstract-environment.ts	72.54% <30.00%> (-10.38%)	:arrow_down:
.../react/src/ui-react/components/form/text-field.tsx	72.72% <50.00%> (ø)
.../src/ui-service/storage/storage-account-service.ts	55.55% <55.55%> (ø)
...rc/ui-service/subscription/subscription-service.ts	55.55% <55.55%> (ø)
...n/src/ui-common/localization/standard-localizer.ts	62.50% <62.50%> (ø)
... and 35 more

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[dpwatrous]

/azp run BatchExplorer - CI

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[dpwatrous]

/azp run BatchExplorer - CI

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).