Evaluate Propel Validators in Schema.xml

[crossan007]

Schema.xml validations updated in 3d0504c seem to no longer work with the updated composer.json files in these commits:

3f01697
6b98e91
5110c31

Error message given include:

In Inline.php line 450:
                                                                                                                                                                 
  Colons must be followed by a space or an indication character (i.e. " ", ",", "[", "]", "{", "}") at line 1 (near "{column: per_firstname, validator: Length   
  , options: {min:2, max: 50}}").                                                                                                                                
                       

In Inline.php line 450:
                                                                                                                                                                 
  Colons must be followed by a space or an indication character (i.e. " ", ",", "[", "]", "{", "}") at line 1 (near "{column: linkname, validator: Length, opt   
  ions: {min:2, max: 50}}").

It looks like the validate behavior may be deprected in Propel2? (propelorm/Propel2#1184)

[crossan007]

This is "fixed" by locking symfony.yml to 3.4.x: a5ac28e

propelorm/Propel2#1526