Revert "[TOFU] Don't send credentials in an unauthenticated TLS tunnel"

This reverts commit fb630e6a13189321d0e83037adc9e7b30dc6d796.

Reason for revert: Regression

Bug ID: 250574778
Change-Id: I2788772c8f2f863f0f2117235483b1dd57ab4ae6
Merged-In: Ib3501f5e04881b11ea9ab52472dd233f2aa82c7a
8 files changed