GS-10827
Exposed default write/read/take/count/change/clear modifiers in GigaSpace proxy. Configurarble in pu.xml and in configurer.
Added getters of default modifiers to GigaSpace interface. semantics for getDefalult[Read|Count]Modifiers are such that the include the current isolation level if exists.
Reviewer: niv

git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@136818 eb64e737-3616-4df0-8941-5ee2ae88103d