add test for bulk session expiration
add test for bulk session expiration

parthiban019/jsforce,lkatney/jsforce,jsforce/jsforce,pcon/jsforce,saleswise/jsforce,kimchouard/jsforce,pcon/jsforce,parthiban019/jsforce,jdcrensh/jsforce,nutthawan/jsforce,nutthawan/jsforce,rdietrick/jsforce,saleswise/jsforce,jsforce/jsforce,pcon/jsforce,bhaskarmelkani/jsforce,jsforce/jsforce,saleswise/jsforce,jesperkristensen/jsforce,joeferraro/jsforce,joeferraro/jsforce,jdcrensh/jsforce,lkatney/jsforce,bhaskarmelkani/jsforce,jesperkristensen/jsforce