Updates to @actions/artifact (#396)

* Add support for 429s and Exponential backoff

* Refactor status-reporter so it can be used with download and upload

* Extra logs

* Fixes around download & gzip

* Cleanup headers and add extra tests

* Improved Docs

* Spelling bloopers

* Improved error messages

* User http client version 1.0.7

packages/artifact/src/internal/__mocks__/config-variables.ts

@@ -13,12 +13,16 @@ export function getUploadChunkSize(): number {
   return 4 * 1024 * 1024 // 4 MB Chunks
 }
 
-export function getUploadRetryCount(): number {
-  return 1
+export function getRetryLimit(): number {
+  return 2
 }
 
-export function getRetryWaitTimeInMilliseconds(): number {
-  return 1
+export function getRetryMultiplier(): number {
+  return 1.5
+}
+
+export function getInitialRetryIntervalInMilliseconds(): number {
+  return 10
 }
 
 export function getDownloadFileConcurrency(): number {