nightly prefix for android nightly jobs (#26652)
Summary:
At the moment we have the same names for PR jobs and nightly jobs and results as we see on https://ezyang.github.io/pytorch-ci-hud/build/pytorch-master:
pytorch_linux_xenial_py3_clang5_android_ndk_r19c_arm_v7a_build-1
pytorch_linux_xenial_py3_clang5_android_ndk_r19c_arm_v7a_build-2
=> adding nightly_ prefix for nightly jobs
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26652
Differential Revision: D17533456
Pulled By: IvanKobzarev
fbshipit-source-id: 586f48dc361c9143d8223e6742bbe78ef96b64fe
