Log Message:
py-google-auth: updated to 1.17.1

1.17.1:

Bug Fixes
narrow acceptable RSA versions to maintain Python 2 compatability

1.17.0:

Features
add quota_project_id to service accounts; add with_quota_project methods

1.16.1:

Bug Fixes
fix impersonated cred exception doc
replace environment variable GCE_METADATA_ROOT with GCE_METADATA_HOST

1.16.0:

Features
add helper func to for default encrypted cert

Bug Fixes
fix impersonated cred for gcloud

1.15.0:

Features
encrypted mtls private key support

Bug Fixes
signBytes for impersonated credentials