feat(credential-provider-imds): adjust static stability expiration to 5-10 mins (#3575)

Author: AllanZhengYP

packages/credential-provider-imds/src/utils/getExtendedInstanceMetadataCredentials.spec.ts

@@ -21,13 +21,13 @@ describe("getExtendedInstanceMetadataCredentials()", () => {
     nowMock.mockRestore();
   });
 
-  it("should extend the expiration random time(~15 mins) from now", () => {
+  it("should extend the expiration random time(5~10 mins) from now", () => {
     const anyDate: Date = "any date" as unknown as Date;
     (Math.random as jest.Mock).mockReturnValue(0.5);
     expect(getExtendedInstanceMetadataCredentials({ ...staticSecret, expiration: anyDate }, logger)).toEqual({
       ...staticSecret,
       originalExpiration: anyDate,
-      expiration: new Date("2022-02-22T00:17:30Z"),
+      expiration: new Date("2022-02-22T00:07:30Z"),
     });
     expect(Math.random).toBeCalledTimes(1);
   });

packages/credential-provider-imds/src/utils/getExtendedInstanceMetadataCredentials.ts

@@ -2,7 +2,7 @@ import { Logger } from "@aws-sdk/types";
 
 import { InstanceMetadataCredentials } from "../types";
 
-const STATIC_STABILITY_REFRESH_INTERVAL_SECONDS = 15 * 60;
+const STATIC_STABILITY_REFRESH_INTERVAL_SECONDS = 5 * 60;
 const STATIC_STABILITY_REFRESH_INTERVAL_JITTER_WINDOW_SECONDS = 5 * 60;
 const STATIC_STABILITY_DOC_URL = "https://docs.aws.amazon.com/sdkref/latest/guide/feature-static-credentials.html";