What you want to use on ESXi 5.x is the esxcli command. Assuming the bundle you posted is supported for ESXi 5.5, use e.g.
esxcli software vib install -d /tmp/INT-intel-lad-ddk-igb-1.3.19.12.1-offline_bundle-185976.zip --dry-run
If the output looks like what you expected, run the command again without the --dry-run option.
André