fix: use new ARM crossbuild docker images (#25987)

* fix: use new ARM crossbuild docker images

* fix: enable ARMv7 package

* fix: use base-arm-debian9 only on ARM64 hosts

* chore: re-disable amrv7

* fix: linting issue

.ci/packer_cache.sh

@@ -45,6 +45,8 @@ function dockerPullImages() {
   docker.elastic.co/kibana/kibana:${SNAPSHOT}
   docker.elastic.co/logstash/logstash:${SNAPSHOT}
   docker.elastic.co/beats-dev/golang-crossbuild:${GO_VERSION}-arm
+  docker.elastic.co/beats-dev/golang-crossbuild:${GO_VERSION}-armhf
+  docker.elastic.co/beats-dev/golang-crossbuild:${GO_VERSION}-armel
   docker.elastic.co/beats-dev/golang-crossbuild:${GO_VERSION}-base-arm-debian9
   docker.elastic.co/beats-dev/golang-crossbuild:${GO_VERSION}-darwin
   docker.elastic.co/beats-dev/golang-crossbuild:${GO_VERSION}-main

dev-tools/mage/crossbuild.go

@@ -197,15 +197,22 @@ func crossBuildImage(platform string) (string, error) {
 	tagSuffix := "main"
 
 	switch {
-	case strings.HasPrefix(platform, "darwin"):
+	case platform == "darwin/amd64":
 		tagSuffix = "darwin-debian10"
-	case strings.HasPrefix(platform, "linux/armv7"):
-		tagSuffix = "armhf"
-	case strings.HasPrefix(platform, "linux/arm"):
+	case platform == "darwin/arm64":
+		tagSuffix = "darwin-arm64-debian10"
+	case platform == "linux/arm64":
 		tagSuffix = "arm"
+		// when it runs on a ARM64 host/worker.
 		if runtime.GOARCH == "arm64" {
 			tagSuffix = "base-arm-debian9"
 		}
+	case platform == "linux/armv5":
+		tagSuffix = "armel"
+	case platform == "linux/armv6":
+		tagSuffix = "armel"
+	case platform == "linux/armv7":
+		tagSuffix = "armhf"
 	case strings.HasPrefix(platform, "linux/mips"):
 		tagSuffix = "mips"
 	case strings.HasPrefix(platform, "linux/ppc"):