Bootstrap scheme for Go port

[Kapil Thangavelu]

Excerpts from Gustavo Niemeyer's message of 2012-04-23 05:51:32 -0700:
> On Mon, Apr 23, 2012 at 03:53, Kapil Thangavelu
> <kapil.thangavelu at canonical.com> wrote:
> > Looks great, we need this. Two comments though, since the version is
> > effectively the same through the cluster (minus errors) what do we gain by not
> > just using a single integer ala charms, ie. even minor version code drift is
> > potentially problematic.
> 
> Please run through the list of goals and the implementation proposal
> and try to apply the same logic with a single integer. You'll probably
> figure why it won't cut. If not, please drop a mail again and we can
> run through it.

please don't do that its patronizing and non responsive. 

sem-versioning here requires human interpretation and is error prone for 
compatibility evaluation.

We already have a few examples from the last cycle of either backwards 
compatible state changes accompanied by incompatible code changes or 
incompatible state changes, in both cases the developers thought they where 
compatible.

i'm suggesting rather than work via a 4 part version string and possibly a 
testing infrastructure to validate the correctness, we just utilize a monotonic 
increasing int. I'm also assuming the implementation of schema upgrades though 
as part of this feature, such that the distinction between revs is varied based 
only on the presence of an associated migration to the revision. 

cheers,

Kapil