Setup ccache symlinks on openSUSE
Setup ccache symlinks on openSUSE

openSUSE's ccache package doesn't include symlinks to enable ccache
for gcc by default, so we set them up manually.

Change-Id: I79dbe814ff2dfad8158fb1f06d68cc07eae19a41

takahashinobuyuki/diskimage-builder,eantyshev/diskimage-builder,takahashinobuyuki/diskimage-builder,switch-ch/diskimage-builder,JioCloud/diskimage-builder,citrix-openstack-build/diskimage-builder,NaohiroTamura/diskimage-builder,openstack/diskimage-builder,switch-ch/diskimage-builder,varunarya10/diskimage-builder,NaohiroTamura/diskimage-builder,CSC-IT-Center-for-Science/diskimage-builder,rdo-management/diskimage-builder,openstack/diskimage-builder,zioproto/diskimage-builder,JioCloud/diskimage-builder,varunarya10/diskimage-builder,citrix-openstack-build/diskimage-builder,rdo-management/diskimage-builder,zioproto/diskimage-builder,eantyshev/diskimage-builder,CSC-IT-Center-for-Science/diskimage-builder