travis: coverlet output format fixed to opencover

Author: lumip

.travis.yml

@@ -14,7 +14,7 @@ install:
   - dotnet restore
   - dotnet tool install coveralls.net --version 2.0.0 --framework netcoreapp3.1 --tool-path testPackages
 script:
-  - dotnet test CompactCryptoGroupAlgebra.Tests --logger "trx;LogFileName=TestResults.trx" --logger "nunit;LogFileName=TestResults.xml" --results-directory ./CompactCryptoGroupAlgebra.Tests/Coverage /p:CollectCoverage=true /p:CoverletOutputFormat=cobertura /p:CoverletOutput=./Coverage/ /p:Exclude="[nunit.*]*"
-  - dotnet test CompactCryptoGroupAlgebra.OpenSsl.Tests --logger "trx;LogFileName=TestResults.trx" --logger "nunit;LogFileName=TestResults.xml" --results-directory ./CompactCryptoGroupAlgebra.OpenSsl.Tests/Coverage /p:CollectCoverage=true /p:CoverletOutputFormat=cobertura /p:CoverletOutput=./Coverage/ /p:Exclude=\"[nunit.*]*,[CompactCryptoGroupAlgebra]*,[CompactCryptoGroupAlgebra.Tests]*\" /p:Include="CompactCryptoGroupAlgebra.OpenSsl*"
+  - dotnet test CompactCryptoGroupAlgebra.Tests --logger "trx;LogFileName=TestResults.trx" --logger "nunit;LogFileName=TestResults.xml" --results-directory ./CompactCryptoGroupAlgebra.Tests/Coverage /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:CoverletOutput=./Coverage/ /p:Exclude="[nunit.*]*"
+  - dotnet test CompactCryptoGroupAlgebra.OpenSsl.Tests --logger "trx;LogFileName=TestResults.trx" --logger "nunit;LogFileName=TestResults.xml" --results-directory ./CompactCryptoGroupAlgebra.OpenSsl.Tests/Coverage /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:CoverletOutput=./Coverage/ /p:Exclude=\"[nunit.*]*,[CompactCryptoGroupAlgebra]*,[CompactCryptoGroupAlgebra.Tests]*\" /p:Include="CompactCryptoGroupAlgebra.OpenSsl*"
 after_success:
   - testPackages/csmacnz.Coveralls --multiple -i "opencover=CompactCryptoGroupAlgebra.Tests/Coverage/coverage.netcoreapp3.1.opencover.xml;opencover=CompactCryptoGroupAlgebra.OpenSsl.Tests/Coverage/coverage.netcoreapp3.1.opencover.xml" --serviceName travis-ci --jobId $TRAVIS_JOB_ID --commitId $TRAVIS_COMMIT --commitBranch $TRAVIS_BRANCH --commitAuthor "$AUTHOR_NAME" --commitEmail "$COMMITTER_EMAIL" --commitMessage "$TRAVIS_COMMIT_MESSAGE" --pullRequest $TRAVIS_PULL_REQUEST