Modifying the /opt/rocm/etc/rdc file modifies RDC launch options. If
the file doesn't exist, the service should still launch (though a new
file should likely be included with the next released package of 'rdc'.
Change-Id: I1a1891e9c5c3e6048754eb555779a97a170754c0
[ROCm/rdc commit: de3cb36ce0]
Brandon Bagwell