RadosClient: Adding pool existence checks for pool create interfaces.

Pool create interfaces would now refer to updated osdmap for pool
existence, such that an appropriate message is thrown to the user
when run via CLI.

Objecter: Removing the check in objecter now.

Fixes: #8835
Signed-off-by: Pavan Rallabhandi <pavan.rallabhandi@sandisk.com>
On Thu, 7 Aug 2014, Pavan Rallabhandi wrote:
> 
> In src/librados/RadosClient.cc:
> 
> >  
> > +  int reply;
> 
> Sure, so do you want me to scrap this pull request and send an updated one?

Either that, or just force-push to the same branch with the new commits 
and the pull request will update