[Bugs] #1568 UNSP: Call sync() after profile creation

[Sugar Labs Bugs]

#1568: Call sync() after profile creation
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    Reporter:  sayamindu                  |          Owner:  tomeu                      
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  Git as of bugdate          
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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 We have had instances of damaged/unreadable ssh key files after a forced
 power off. It may make sense to call sync() to write these and everything
 else to the disk to ensure that the system does not remain in an unusable
 state (due to the damaged ssh key file, Sugar refused to start, sending
 the display manager in a loop).

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1568>
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