Add integration tests for simple associations and composite key associations
Add integration tests for simple associations and composite key associations

gferguson-gd/sequel,t-morgan/sequel,freshpay/sequel,pfarrell/sequel,beni55/sequel,nju520/sequel,t-morgan/sequel,Marketcircle/sequel,offshore-safety/sequel,freshpay/sequel,reubano/sequel,dennis-d/custom_sequel,tmm1/sequel,yazshel/sequel,uhoh-itsmaciek/sequel,knut2/sequel,nicohvi/sequel,nju520/sequel,seeARMS/sequel,gferguson-gd/sequel,offshore-safety/sequel,beni55/sequel,reubano/sequel,mpalmer/sequel,nicohvi/sequel,yazshel/sequel,davidbegin/sequel,knut2/sequel,davidbegin/sequel,dennis-d/custom_sequel,pfarrell/sequel,chef/sequel,uhoh-itsmaciek/sequel,bigfix/sequel,seeARMS/sequel,mpalmer/sequel,offshore-safety/sequel