change reimbursement mailer spec to check both HTML and Text templates
change reimbursement mailer spec to check both HTML and Text templates

ayb/spree,vinsol/spree,vinsol/spree,vinayvinsol/spree,ayb/spree,imella/spree,imella/spree,ayb/spree,ayb/spree,vinsol/spree,imella/spree,vinayvinsol/spree,vinayvinsol/spree,vinayvinsol/spree,vinsol/spree