[!!!][TASK] Fix DDL for PDO cache backend
[!!!][TASK] Fix DDL for PDO cache backend

This is a followup to change Iba0f930b6b0b8ca224dc530f67a621a3747a5623,
where scope was renamed to context - this needs to be reflected in the
used tables as well.

If the PDO cache backend is used, you need to make sure the tables are
updated as needed!

Change-Id: I37be748273881ad153b5ee2595b0ee0532e661f4
Original-Commit-Hash: 5ff46bf7b8940da2a0105c01738db835bc7991ce

dfeyer/flow-development-collection,daniellienert/flow-development-collection,albe/flow-development-collection,mkeitsch/flow-development-collection,gerhard-boden/flow-development-collection,dfeyer/flow-development-collection,fcool/flow-development-collection,dlubitz/flow-development-collection,kdambekalns/flow-development-collection,bwaidelich/flow-development-collection,fcool/flow-development-collection,robertlemke/flow-development-collection,gerhard-boden/flow-development-collection,chewbakartik/flow-development-collection,albe/flow-development-collection,fcool/flow-development-collection,neos/flow-development-collection,dfeyer/flow-development-collection,kitsunet/flow-development-collection,dlubitz/flow-development-collection,gerhard-boden/flow-development-collection,neos/flow-development-collection,fcool/flow-development-collection,chewbakartik/flow-development-collection,bwaidelich/flow-development-collection,chewbakartik/flow-development-collection,dfeyer/flow-development-collection,neos/flow-development-collection,bwaidelich/flow-development-collection,aertmann/flow-development-collection,neos/flow-development-collection,kitsunet/flow-development-collection,robertlemke/flow-development-collection,mkeitsch/flow-development-collection,kdambekalns/flow-development-collection,daniellienert/flow-development-collection,robertlemke/flow-development-collection,albe/flow-development-collection,mkeitsch/flow-development-collection,kdambekalns/flow-development-collection,kdambekalns/flow-development-collection,dlubitz/flow-development-collection,daniellienert/flow-development-collection,kitsunet/flow-development-collection,robertlemke/flow-development-collection,aertmann/flow-development-collection,aertmann/flow-development-collection