DDC-3584: [GH-1310] Allow symfony 3.0 components

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of nicolas-grekas:

Url: #1310

Message:

Tests should tell if any deprecated interfaces of Symfony are used. If not, then the bundle is defacto compatible with 3.0

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1310] was labeled:
#1310

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1310] was unlabeled:
#1310

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1310] was assigned:
#1310

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1310] was labeled:
#1310

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-1310] was merged:
#1310

[doctrinebot]

Issue was closed with resolution "Fixed"