cmake/AddCephTest: Specify resoureces to crimson unittest

cmake/AddCephTest: Specify resoureces to crimson unittest

When running crimson unittest, the seastar framework always
use and only use cpu0, and with many parallel crimson unittest
jobs, all the jobs are running on cpu0, the other cpu cores
can't used, make the make check run very slow, even timeout
happens. Use set_property RESOURCE_GROUPS to specify cpu resources
to crimson unittest, and accelerate make check running.

Fixes: https://tracker.ceph.com/issues/64117
Co-authored-by: Kefu Chai <tchaikov@gmail.com>
Signed-off-by: luo rixin <luorixin@huawei.com>