Fix rspec deprecation warnings
Fix rspec deprecation warnings

davidbegin/webmock,henrik/webmock,taiki45/webmock,xuwupeng2000/webmock,maruware/webmock,Omnihuron/webmock,spjsschl/webmock,hobodave/webmock,bblimke/webmock,hilben/webmock,avantcredit/webmock,sferik/webmock,influxdb/webmock,ixti/webmock,sinisterstuf/webmock,VincentZhao/webmock,arronmabrey/webmock