core, engine: Add more OSes for the ppc64 architecture

This change includes more OSes which are compatible with the ppc64
architecture. Currently only SLES and RHEL are added in osinfo.

Change-Id: Ib0c0915e6ba803640d97a83e1d47b0541f19288c
Signed-off-by: Gustavo Pedrosa <gustavo.pedrosa@eldorado.org.br>