feature: make encType/addr/realm/domain configrable

[zhuliquan]

I wanted to use this mocktest in our project tests, but I found that there were a lot of global variables that I couldn't customize, which made me unable to use them well. So I changed some variables (such as ServerAddr) to be modifiable outside the package

[mikegolod]

Good feature! In my case I wanted to create multiple test KDCs with different Realms. I think that instead of storing this in globals we should add some kind of options structure (or just more argumenst) to NewKDC function. IMHO globals are not flexible enough. What you think?

[zhuliquan]

Good feature! In my case I wanted to create multiple test KDCs with different Realms. I think that instead of storing this in globals we should add some kind of options structure (or just more argumenst) to NewKDC function. IMHO globals are not flexible enough. What you think?

I also agree with you