TEST: Update test_rcache to meet new gtest structure
TEST: Update test_rcache to meet new gtest structure

sergsagal1/ucx_rocm,shssf/ucx,sergsagal1/ucx_rocm,abouteiller/ucx,shssf/ucx,shssf/ucx,abouteiller/ucx,sergsagal1/ucx_rocm,abouteiller/ucx,abouteiller/ucx