This change migrates p12 service account authentication flow from oauth2client to google-auth. The change is required, as oauth2client depends upon openSSL for understanding .p12 format keyfiles, in newer version of openSSL they've deprecated the support for .p12 files, due to which oauth2client would throw an error as described in bug b/330533641.
This change migrates p12 service account authentication flow from oauth2client to google-auth. The change is required, as oauth2client depends upon openSSL for understanding .p12 format keyfiles, in newer version of openSSL they've deprecated the support for .p12 files, due to which oauth2client would throw an error as described in bug b/330533641.
Fixes b/330533641.