Add istanbul cobertura reporter to Jest and Karma tests

.gitlab/ci/frontend.gitlab-ci.yml

@@ -226,6 +226,8 @@ coverage-frontend:
     expire_in: 31d
     paths:
       - coverage-frontend/
+    reports:
+      cobertura: coverage-frontend/cobertura-coverage.xml
 
 .qa-frontend-node:
   extends:

config/karma.config.js

@@ -181,7 +181,7 @@ module.exports = function(config) {
   if (process.env.BABEL_ENV === 'coverage' || process.env.NODE_ENV === 'coverage') {
     karmaConfig.reporters.push('coverage-istanbul');
     karmaConfig.coverageIstanbulReporter = {
-      reports: ['html', 'text-summary'],
+      reports: ['html', 'text-summary', 'cobertura'],
       dir: 'coverage-javascript/',
       subdir: '.',
       fixWebpackSourcePaths: true,

scripts/frontend/merge_coverage_frontend.js

@@ -26,6 +26,6 @@ reportFiles
 
 const context = createContext({ coverageMap: coverageMap, dir: 'coverage-frontend' });
 
-['json', 'lcov', 'text-summary', 'clover'].forEach(reporter => {
+['json', 'lcov', 'text-summary', 'clover', 'cobertura'].forEach(reporter => {
   create(reporter, {}).execute(context);
 });