Add username and password to properties.cc.bits_service
Add username and password to properties.cc.bits_service

With the new /sign endpoint in the bits-service requiring basic_auth, this is necessary to configure the bits_service_client correctly.

[#126851165]

Signed-off-by: Peter Goetz <1bf679f6f155949fea19af278a2667a47961da6b@gmail.com>

cloudfoundry-incubator/bits-service-ci,cloudfoundry-incubator/bits-service-ci,cloudfoundry-incubator/bits-service-ci