[Migration] - Audit schema updates required migration before 1.5

Since deletion of audit schema for attribute Audit Rotation (see below previous schema ):

attributetype ( 1.3.6.1.4.1.38414.61.1.3 NAME 'fdAuditRotationDelay'
  DESC 'FusionDirectory - Actions to be stored by audit plugin'
  EQUALITY integerMatch
  SYNTAX 1.3.6.1.4.1.1466.115.121.1.27
  SINGLE-VALUE)

objectclass ( 1.3.6.1.4.1.38414.61.2.1 NAME 'fdAuditPluginConf'
  DESC 'FusionDirectory audit plugin configuration'
  SUP top AUXILIARY
  MUST ( cn )
  MAY ( fdAuditActions $ fdAuditRDN $ fdAuditRotationDelay ) )

We must delete the value of that attribute before removal and update of the new audit schema.

An update of the documentation from 1.4 to 1.5 is required : https://fusiondirectory-user-manual.readthedocs.io/en/latest/fusiondirectory/update/supported/1.3-1-to-1.4.html