[T/LIE] Relax tolerances for sigma_xy.

Tests/Data/LIE/Mechanics/mohr_coulomb_load_path_nu0p3.prj

@@ -289,7 +289,7 @@
       <vtkdiff>
             <regex>out_mohr_coulomb_load_path_nu0p3_ts_(.*)_t_0.500000.vtu</regex>
             <field>stress_xy</field>
-            <absolute_tolerance>2e-12</absolute_tolerance>
+            <absolute_tolerance>3e-4</absolute_tolerance>
             <relative_tolerance>0</relative_tolerance>
         </vtkdiff>
         <vtkdiff>
@@ -301,14 +301,14 @@
         <vtkdiff>
             <regex>out_mohr_coulomb_load_path_nu0p3_ts_(.*)_t_2.500000.vtu</regex>
             <field>stress_xy</field>
-            <absolute_tolerance>5e-4</absolute_tolerance>
-            <relative_tolerance>1e-15</relative_tolerance>
+            <absolute_tolerance>2e-3</absolute_tolerance>
+            <relative_tolerance>0</relative_tolerance>
         </vtkdiff>
         <vtkdiff>
             <regex>out_mohr_coulomb_load_path_nu0p3_ts_(.*)_t_4.000000.vtu</regex>
             <field>stress_xy</field>
-            <absolute_tolerance>1e-7</absolute_tolerance>
-            <relative_tolerance>1e-15</relative_tolerance>
+            <absolute_tolerance>4e-4</absolute_tolerance>
+            <relative_tolerance>0</relative_tolerance>
         </vtkdiff>
        <vtkdiff>
             <regex>out_mohr_coulomb_load_path_nu0p3_ts_(.*)_t_0.500000.vtu</regex>