Refactor spotless formatting file out of build.gradle

Signed-off-by: Daniel Widdis <[email protected]>

build.gradle

@@ -8,6 +8,7 @@ apply plugin: 'opensearch.yaml-rest-test'
 apply plugin: 'opensearch.pluginzip'
 // for formatting and license headers
 apply plugin: 'com.diffplug.spotless'
+apply from: 'formatter/formatting.gradle'
 // for javadocs and checks spotless doesn't do
 apply plugin: 'checkstyle'
 // for coverage and diff
@@ -97,37 +98,6 @@ dependencies {
     }
 }
 
-allprojects {
-    spotless {
-        java {
-            // Normally this isn't necessary, but we have Java sources in
-            // non-standard places
-            target '**/*.java'
-
-            removeUnusedImports()
-            importOrder 'java', 'javax', 'org', 'com'
-            eclipse().configFile rootProject.file('formatter/formatterConfig.xml')
-            trimTrailingWhitespace()
-            endWithNewline();
-
-            // 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("license", {
-            licenseHeaderFile("${rootProject.file("formatter/license-header.txt")}", "package ");
-            target("src/*/java/**/*.java")
-        })
-    }
-}
-
 test {
     include '**/*Tests.class'
 }

formatter/formatting.gradle

@@ -0,0 +1,30 @@
+allprojects {
+    spotless {
+        java {
+            // Normally this isn't necessary, but we have Java sources in
+            // non-standard places
+            target '**/*.java'
+
+            removeUnusedImports()
+            importOrder 'java', 'javax', 'org', 'com'
+            eclipse().configFile rootProject.file('formatter/formatterConfig.xml')
+            trimTrailingWhitespace()
+            endWithNewline();
+
+            // 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("license", {
+            licenseHeaderFile("${rootProject.file("formatter/license-header.txt")}", "package ");
+            target("src/*/java/**/*.java")
+        })
+    }
+}