Stackdriver: Project selector (#22447)

* clean PR #17366

* udpate vendor

* [WIP] Implement projects management for stackdriver

* [WIP] Implement projects management for stackdriver

* [WIP] Implement projects management for stackdriver

* Implement projects management for stackdriver

* [WIP][Tests] Fix errors

* clean anonymous struct

* remove await

* don't store project list

* Add default project on query editor

* gofmt

* Fix tests

* Move test data source to backend

* Use segment instead of dropdown. remove ensure default project since it's not being used anymore.

* Fix broken annotation editor

* Load gceDefaultAccount only once when in the config page

* Reset error message on auth type change

* Add metric find query for projects

* Remove debug code

* Fix broken tests

* Fix typings

* Fix lint error

* Slightly different approach - now having a distiction between config page default project, and project that is selectable from the dropdown in the query editor.

* Fix broken tests

* Attempt to fix strict ts errors

* Prevent state from being set multiple times

* Remove noOptionsMessage since it seems to be obosolete in react select

* One more attempt to solve ts strict error

* Interpolate project template variable. Make sure its loaded correctly when opening variable query editor first time

* Implicit any fix

* fix: typescript strict null check fixes

* Return empty array in case project endpoint fails

* Rename project to projectName to prevent clashing with legacy query prop

* Fix broken test

* fix: Stackdriver - template replace on filter label

should have a regex format as that escapes the dots
in the label name which is not valid.

Co-authored-by: Labesse Kévin <kevin@labesse.me>
Co-authored-by: Elias Cédric Laouiti <elias@abtasty.com>
Co-authored-by: Daniel Lee <dan.limerick@gmail.com>

public/app/core/components/Select/MetricSelect.tsx

@@ -70,7 +70,6 @@ export class MetricSelect extends React.Component<Props, State> {
     const { placeholder, className, isSearchable, onChange } = this.props;
     const { options } = this.state;
     const selectedOption = this.getSelectedOption();
-
     return (
       <Select
         className={className}