Variable Names Should be Double Quoted

[danchirillo]

You could get away with not enclosing variables whose values can't (or don't) contain spaces (like CPU), but several other variables (like VSPHERE_NODE_DATASTORE, VSPHERE_NETWORK, FOLDER, etc.) can easily have them.

Example update:

binaries/govc vm.create 
    -c=${CPU} \
    -m=${MEM} \
    -disk=${DISK}GB \
    -ds="${VSPHERE_NODE_DATASTORE}" \
    -net="${VSPHERE_NETWORK}" \
    -pool="${VSPHERE_POOL}" \
    -folder="${FOLDER}" \
    -on=false \
    -iso-datastore="${VSPHERE_IMAGE_DATASTORE}" \
    -iso="${VSPHERE_IMAGE_DATASTORE_PATH}/${OPENSHIFT_CLUSTERNAME}-${TYPE}-${COUNT}.iso" \
    "${OPENSHIFT_CLUSTERNAME}-${TYPE}-${COUNT}"