MANATEE-151: updates for sdcnode used in manatee zone
MANATEE-151: updates for sdcnode used in manatee zone

Make a 32-bit sdcnode build for multiarch (for manatee to use).

++v0.10.26-zone (image sdc-multiarch/13.3.1)
++v0.10.26-zone64 (image sdc-multiarch/13.3.1)

joyent/sdcnode