Add formatting changes in feature/extensions

Signed-off-by: Craig Perkins <cwperx@amazon.com>

build.gradle

@@ -70,6 +70,60 @@ apply plugin: 'opensearch.opensearchplugin'
 apply plugin: 'opensearch.pluginzip'
 apply plugin: 'opensearch.rest-test'
 apply plugin: 'opensearch.testclusters'
+// apply from: 'gradle/formatting.gradle'
+
+spotless {
+    java {
+        // Normally this isn't necessary, but we have Java sources in
+        // non-standard places
+        target '**/com/amazon/dlic/**/*.java'
+        target '**/com/amazon/security/**/*.java'
+        target '**/test/java/org/opensearch/security/**/*.java'
+
+        removeUnusedImports()
+        eclipse().configFile rootProject.file('formatter/formatterConfig.xml')
+        trimTrailingWhitespace()
+        endWithNewline();
+
+        // note: you can use an empty string for all the imports you didn't specify explicitly, and '\\#` prefix for static imports
+        importOrder('java', 'javax', '', 'com.amazon', 'org.opensearch', '\\#')
+
+        custom 'Refuse wildcard imports', {
+            // Wildcard imports can't be resolved; fail the build
+            if (it =~ /\s+import .*\*;/) {
+                throw new AssertionError("Do not use wildcard imports.  'spotlessApply' cannot resolve this issue.")
+            }
+        }
+
+        // See DEVELOPER_GUIDE.md for details of when to enable this.
+        if (System.getProperty('spotless.paddedcell') != null) {
+            paddedCell()
+        }
+    }
+    format 'misc', {
+        target '*.md', '*.gradle', '**/*.json', '**/*.yaml', '**/*.yml', '**/*.svg'
+
+        trimTrailingWhitespace()
+        endWithNewline()
+    }
+    format('javaFoo', JavaExtension) {
+
+        importOrder('java', 'javax', '', 'com.amazon', 'org.opensearch', '\\#')
+        target '**/*.java'
+        targetExclude '**/com/amazon/dlic/**/*.java'
+        targetExclude '**/com/amazon/security/**/*.java'
+        targetExclude '**/test/java/org/opensearch/security/**/*.java'
+        targetExclude 'src/integrationTest/**'
+
+        trimTrailingWhitespace()
+        endWithNewline();
+    }
+    format("integrationTest", JavaExtension) {
+        target('src/integrationTest/java/**/*.java')
+        importOrder('java', 'javax', '', 'com.amazon', 'org.opensearch', '\\#')
+        indentWithTabs(4)
+    }
+}
 
 licenseFile = rootProject.file('LICENSE.txt')
 noticeFile = rootProject.file('NOTICE.txt')