Remove zips used by bwc tests

Signed-off-by: Bharathwaj G <bharath78910@gmail.com>

build.gradle

@@ -213,7 +213,10 @@ task integTestRemote(type: RestIntegTestTask) {
 }
 
 String baseName = "asynSearchCluster"
+String bwcVersion = "1.13.0.1"
 String bwcFilePath = "src/test/resources/org/opensearch/search/asynchronous/bwc/"
+String bwcRemoteFile = "https://d3g5vo6xdbdb9a.cloudfront.net/downloads/elasticsearch-plugins/asynchronous-search/opendistro-asynchronous-search-1.13.0.1.zip"
+String bwcOpenDistroPlugin = "opendistro-asynchronous-search-1.13.0.1.zip"
 
 // Creates two test clusters of previous version and loads opensearch plugin of bwcVersion
 2.times { i ->
@@ -228,6 +231,14 @@ String bwcFilePath = "src/test/resources/org/opensearch/search/asynchronous/bwc/
                     return new RegularFile() {
                         @Override
                         File getAsFile() {
+                            File dir = new File(bwcFilePath + bwcVersion)
+                            if (!dir.exists()) {
+                                dir.mkdirs()
+                            }
+                            File f = new File(bwcOpenDistroPlugin, dir)
+                            if (!f.exists()) {
+                                new URL(bwcRemoteFile).withInputStream{ ins -> f.withOutputStream{ it << ins }}
+                            }
                             return fileTree(bwcFilePath + opendistro_plugin_version).getSingleFile()
                         }
                     }