fix #185; allow multiple users in the same python script

[Celthi]

fix #185

[jofegan]

Making a copy of the dict makes sense to me, but I would use dict.copy() explicitly so that the intent is clear to future readers.

[Celthi]

Making a copy of the dict makes sense to me, but I would use dict.copy() explicitly so that the intent is clear to future readers.

Good catch! Changed.

[jofegan]

I think this actually addresses a wider use case: does pyral support more than one Rally object in a single process? If so then this change is needed, because init takes a "headers" keyword but with the current code it is not possible to change the headers for one Rally object without affecting them all, because they are all pointing to the same static dict.

[jofegan]

LGTM

[Celthi]

Any plan to merge this fix?

[klehman-rally]

This mod is included in the 1.6.0 release.