Include integration tests in windows and macOS workflow (#1375) (#1376)

Signed-off-by: Rupal Mahajan <maharup@amazon.com>
(cherry picked from commit 84127f6)

Co-authored-by: Rupal Mahajan <maharup@amazon.com>

.github/workflows/opensearch-observability-test-and-build-workflow.yml

@@ -4,17 +4,10 @@ on: [pull_request, push]
 
 jobs:
   build:
-    env:
-      BUILD_ARGS: ${{ matrix.os_build_args }}
     strategy:
       matrix:
         java: [11, 17]
         os: [ubuntu-latest, windows-latest, macos-latest]
-        include:
-          - os: windows-latest
-            os_build_args: -x integTest -x jacocoTestReport
-          - os: macos-latest
-            os_build_args: -x integTest -x jacocoTestReport
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -34,7 +27,7 @@ jobs:
 
       - name: Build with Gradle
         run: |
-          ./gradlew build ${{ env.BUILD_ARGS }}
+          ./gradlew build
 
       - name: Upload coverage
         if: ${{ matrix.os == 'ubuntu-latest' }}

build-tools/opensearchplugin-coverage.gradle

@@ -17,6 +17,9 @@
  *  break if there are multiple nodes in the integTestCluster. But for now... it sorta works.
  */
 
+import org.apache.tools.ant.taskdefs.condition.Os
+apply plugin: 'jacoco'
+
 // Get gradle to generate the required jvm agent arg for us using a dummy tasks of type Test. Unfortunately Elastic's
 // testing tasks don't derive from Test so the jacoco plugin can't do this automatically.
 def jacocoDir = "${buildDir}/jacoco"
@@ -61,7 +64,12 @@ allprojects{
         jacocoTestReport.dependsOn integTest
 
         testClusters.integTest {
-            jvmArgs " ${dummyIntegTest.jacoco.getAsJvmArg()}".replace('javaagent:','javaagent:/')
+            if (Os.isFamily(Os.FAMILY_WINDOWS)) {
+                // Replacing build with absolute path to fix the error "error opening zip file or JAR manifest missing : /build/tmp/expandedArchives/..../jacocoagent.jar"
+                jvmArgs " ${dummyIntegTest.jacoco.getAsJvmArg()}".replace('build',"${buildDir}")
+            } else {
+                jvmArgs " ${dummyIntegTest.jacoco.getAsJvmArg()}".replace('javaagent:','javaagent:/')
+            }
             systemProperty 'com.sun.management.jmxremote', "true"
             systemProperty 'com.sun.management.jmxremote.authenticate', "false"
             systemProperty 'com.sun.management.jmxremote.port', "7777"