Dev env cleanup + Linux fix

[theofidry]

• Changed of Vagrant box source for jessie.
• Changed VM MySQL port as it may often overlap with the user MySQL server.
• Disabled default vagrant sync folder (was unused)
• Changed Ansible provision host from all to dev so that we can add a prod host.
• Change incipio ansible role for symfony as it is more symfony centric.
• Various fix on scripts:
  • Syntax fix.
  • Checked for the use of sudo.
  • Added composer self update.