Change minimum line coverage from 85 to 80

Author: Bertk

eng/build.yml

@@ -68,6 +68,6 @@ steps:
   parameters:
     reports: $(Build.SourcesDirectory)\test\**\*.opencover.xml
     condition: and(succeededORFailed(), eq(variables['buildConfiguration'], 'debug'), eq(variables['agent.os'], 'Windows_NT'))
-    minimumLineCoverage: 85
+    minimumLineCoverage: 80
     assemblyfilters: '-xunit;-coverlet.testsubject;-Coverlet.Tests.ProjectSample.*;-coverlet.core.tests.samples.netstandard;-coverletsamplelib.integration.template;-coverlet.tests.utils'