Bumping symfony version to new LTS
Bumping symfony version to new LTS

Lionel09/GeneratorBundle,RunOpenCode/GeneratorBundle,symfony2admingenerator/GeneratorBundle,symfony2admingenerator/GeneratorBundle,Lionel09/GeneratorBundle,ksn135/GeneratorBundle,ksn135/GeneratorBundle,RunOpenCode/GeneratorBundle,atamashi/GeneratorBundle,symfony2admingenerator/GeneratorBundle,atamashi/GeneratorBundle,RunOpenCode/GeneratorBundle,atamashi/GeneratorBundle,Lionel09/GeneratorBundle,ksn135/GeneratorBundle