Users/bogercraig/endpointvalidation (#1554)

* Adding example endpoint with trailing forward slash.

* Move backend and ARM endpoint validation to configContext for initialization from config.json.

* Added debugging script and attempts to relocate endpoint validation list.

* Move default endpoint list to endpoint validation code and allow falling back to the default list during unit tests if configContext is not initialized.

* Remove leftover debugger statements.

* Remove test debug script in package.json for debugging unit tests in browser.

* Run prettier on modified files.

* Overwriting with package.json from master.

* Overwriting with version from master.

* Remove test ARM endpoint.

* Replace ternary operator with || for more concise arguments per Victor's feedback.

---------

Co-authored-by: Craig Boger <craig.boger@microsoft.com>

src/Utils/EndpointValidation.ts

@@ -38,7 +38,7 @@ function validateEndpointInternal(
   return valid;
 }
 
-export const allowedArmEndpoints: ReadonlyArray<string> = [
+export const defaultAllowedArmEndpoints: ReadonlyArray<string> = [
   "https://​management.azure.com",
   "https://​management.usgovcloudapi.net",
   "https://management.chinacloudapi.cn",
@@ -46,7 +46,7 @@ export const allowedArmEndpoints: ReadonlyArray<string> = [
 
 export const allowedAadEndpoints: ReadonlyArray<string> = ["https://login.microsoftonline.com/"];
 
-export const allowedBackendEndpoints: ReadonlyArray<string> = [
+export const defaultAllowedBackendEndpoints: ReadonlyArray<string> = [
   "https://main.documentdb.ext.azure.com",
   "https://main.documentdb.ext.azure.cn",
   "https://main.documentdb.ext.azure.us",