KAFKA-19174 tidying up things: 'distribution' dummy folder is removed

Author: dejan2609

build.gradle

@@ -274,7 +274,6 @@ if (repo != null) {
     // And some of the files that we have checked in should also be excluded from this check
     excludes.addAll([
         '**/.git/**',
-        '**/.gitkeep',
         '**/build/**',
         '.github/pull_request_template.md',
         'CONTRIBUTING.md',

distribution/.gitkeep

@@ -128,5 +128,6 @@ include 'clients',
     'test-common:test-common-runtime'
 
 project(":storage:api").name = "storage-api"
+project(":distribution").projectDir.mkdirs()
 rootProject.name = 'kafka'