This patch updates Echo to revision 6081131 of Schema:Echo, adding a 'rev_id'
field and the code to populate it. The patch also increments the logging
version identifier to 1.5.
Bug: 46045
Change-Id: I4ac1a25c306b0e0983a3490a29fe3dc4aa4bfc6f
Echo preference change is already captured in the general
preference change eventlogging, this is just a duplicate
Change-Id: I49cd2ad5776a670e2cd28414e156f5201087ded0