Revert d7c01b3 which should only be in 6.0

See #24173

Author: rjernst

distribution/tools/plugin-cli/src/main/java/org/elasticsearch/plugins/InstallPluginCommand.java

@@ -207,6 +207,11 @@ void execute(Terminal terminal, String pluginId, boolean isBatch, Environment en
             throw new UserException(ExitCodes.USAGE, "plugin id is required");
         }
 
+        if (Files.exists(env.pluginsFile()) == false) {
+            terminal.println("Plugins directory [" + env.pluginsFile() + "] does not exist. Creating...");
+            Files.createDirectory(env.pluginsFile());
+        }
+
         Path pluginZip = download(terminal, pluginId, env.tmpFile());
         Path extractedZip = unzip(pluginZip, env.pluginsFile());
         install(terminal, isBatch, extractedZip, env);

distribution/tools/plugin-cli/src/test/java/org/elasticsearch/plugins/InstallPluginCommandTests.java

@@ -348,7 +348,6 @@ public void testUnknownPlugin() throws Exception {
         assertTrue(e.getMessage(), e.getMessage().contains("Unknown plugin foo"));
     }
 
-    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/24693")
     public void testPluginsDirMissing() throws Exception {
         Tuple<Path, Environment> env = createEnv(fs, temp);
         Files.delete(env.v2().pluginsFile());