the `kickstart_kernel_options` snippet create bond kernel parameter.

Refer to dracut man page the bond parameter expect bondslaves as comma separated string. The current implementation place iface.attached_devices_identifiers as list. If we render it with a bond configured host it looks like this:

bond=bond0:["eth2", "eth3"]:mode=802.3ad,miimon=100,lacp_rate=1

Correct will be this parameter string:

bond=bond0:eth2,eth3:mode=802.3ad,miimon=100,lacp_rate=1