[Lock] Split PdoStore into DoctrineDbalStore

[fabpot]

Q	A
Feature PR	symfony/symfony#43332
PR author(s)	@GromNaN
Merged in	5.4

[carsonbot]

Thank you for this issue.
There has not been a lot of activity here for a while. Has this been resolved?

[alamirault]

With #16217 merged, we can close this issue @GromNaN right ?