Revert "remove debug and m2 folder changes"

This reverts commit 02945a2.

Author: randomanderson

.gitlab-ci.yml

@@ -164,6 +164,8 @@ default:
     - source .gitlab/gitlab-utils.sh
     - mkdir -p .gradle
     - export GRADLE_USER_HOME=$(pwd)/.gradle
+    - mkdir -p .m2
+    - export MAVEN_USER_HOME=$(pwd)/.m2
     - |
       # Don't put jvm args here as it will be picked up by child gradle processes used in tests
       cat << EOF > $GRADLE_USER_HOME/gradle.properties

dd-smoke-tests/maven/src/test/groovy/datadog/smoketest/MavenSmokeTest.groovy

@@ -371,6 +371,11 @@ class MavenSmokeTest extends CiVisibilitySmokeTest {
       "-Dmaven.multiModuleProjectDirectory=${projectHome.toAbsolutePath()}".toString(),
     ]
 
+    String m2 = System.getenv().get("MAVEN_USER_HOME")
+    if (m2 != null) {
+      arguments += "-Dmaven.repo.local=${m2}".toString()
+    }
+
     if (runWithAgent) {
       if (System.getenv("DD_CIVISIBILITY_SMOKETEST_DEBUG_PARENT") != null) {
         // for convenience when debugging locally