Loose error tol from 5e-14 to 5.5e-14 for gnu-opt-serial on hansen/shiller (#2475)
Created by: bartlettroscoe
CC: @trilinos/teko
This small increase in the error tolerance allows the tDiagonallyScaledPreconditioner_application_test_row_tpetra_UnitTest unit test to pass on the ATDM build Trilinos-atdm-hansen-shiller-gnu-opt-serial. See #2475 (closed).