Use codecov for checking coverage step instead of coveralls

As coveralls.io is not supported yet for Github Action
so we switch to use codecov.io for our coverage check

Author: Binh Pham

.github/workflows/build.yml

@@ -22,19 +22,12 @@ jobs:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
           restore-keys: ${{ runner.os }}-m2
-      - name: Set branch name and PR number
-        id: refs
-        env:
-          BRANCH_NAME_OR_REF: ${{ github.head_ref || github.ref }}
+      - name: Run build steps and generate coverage report
         run: |
-          echo "::set-output name=branch_name::${BRANCH_NAME_OR_REF#refs/heads/}"
-          echo "::set-output name=pr_number::$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")"
-      - name: Run build steps and check coverage
-        env:
-          CI_NAME: Github
-          CI_BUILD_NUMBER: ${{ github.run_id }}
-          CI_BUILD_URL: https://github.com/${{ github.repository }}/commit/${{ github.event.after }}/checks
-          CI_BRANCH: ${{ steps.refs.outputs.branch_name }}
-          CI_PULL_REQUEST: ${{ steps.refs.outputs.pr_number }}
-        run: |
-          mvn verify javadoc:javadoc coveralls:report -Pcoverage -DrepoToken=${{ secrets.COVERALLS_REPO_TOKEN }} -B -V
+          mvn verify javadoc:javadoc jacoco:report -Pcoverage -B -V
+      - name: Upload coverage report to Codecov
+        uses: codecov/codecov-action@v1
+        with:
+          file: ./**/target/site/jacoco/jacoco.xml
+          name: codecov
+          fail_ci_if_error: true

README.md

@@ -6,7 +6,7 @@
 [![Release](https://img.shields.io/github/release/gooddata/gooddata-java.svg)](https://github.com/gooddata/gooddata-java/releases)
 [![Stability: Active](https://masterminds.github.io/stability/active.svg)](https://masterminds.github.io/stability/active.html)
 [![License](https://img.shields.io/badge/license-BSD-blue.svg)](LICENSE.txt)
-[![Coverage Status](https://coveralls.io/repos/github/gooddata/gooddata-java/badge.svg?branch=master)](https://coveralls.io/github/gooddata/gooddata-java?branch=master)
+[![Coverage Status](https://codecov.io/gh/gooddata/gooddata-java/branch/master/graph/badge.svg)](https://codecov.io/gh/gooddata/gooddata-java/branch/master/graph/badge.svg)
 
 The *GoodData Java SDK* encapsulates the REST API of the **GoodData Platform**.
 The first version was implemented during the [All Data Hackathon](http://hackathon.gooddata.com) April 10 - 11 2014.

pom.xml

@@ -178,20 +178,6 @@
             <id>coverage</id>
             <build>
                 <plugins>
-                    <plugin>
-                        <groupId>org.eluder.coveralls</groupId>
-                        <artifactId>coveralls-maven-plugin</artifactId>
-                        <version>4.3.0</version>
-                        <!-- ugly hack for java 11 build until https://github.com/trautonen/coveralls-maven-plugin/issues/112 -->
-                        <!-- will be released (coverall-maven-plugin-5.0.0) -->
-                        <dependencies>
-                            <dependency>
-                                <groupId>javax.xml.bind</groupId>
-                                <artifactId>jaxb-api</artifactId>
-                                <version>2.3.1</version>
-                            </dependency>
-                        </dependencies>
-                    </plugin>
                     <plugin>
                         <groupId>org.jacoco</groupId>
                         <artifactId>jacoco-maven-plugin</artifactId>