Add support to p4RuntimeSerializer to indexing into header stacks in table match keys. Fixes #291
Add support to p4RuntimeSerializer to indexing into header stacks in table match keys. Fixes #291

hanw/p4c,hanw/p4c,p4lang/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone,hanw/p4c,hanw/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone,mbudiu-vmw/p4c-clone,p4lang/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone