Environment config : Missing constraint in env_cfg

Created by: AyoubJalali

Hello, While re-using the core control agent, I notice that there's only one constraint for the agent interface signals in the env cfg, the constraint is simple if there's no +plusargs in the cmd line of vcs give a default value.

I thing the boot_addr should be half-word aligned, so we should add a constraint for the boot_addr to keep it in the green values. What do you think about that ?