Add guard for h2 for correlated_subquery integration tests
Add guard for h2 for correlated_subquery integration tests

Older versions of h2 worked correctly, but newer versions do
no longer handle the correlated subquery properly.

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