[Spotless] Applying Google Code Format for common #7 (opensearch-project#1940)

* Spotless apply for common directory.

Signed-off-by: Mitchell Gale <[email protected]>

* Igoring checkstyle for common

Signed-off-by: Mitchell Gale <[email protected]>

* Spotless apply on string utils,

Signed-off-by: Mitchell Gale <[email protected]>

* Typo fix

Signed-off-by: Yury-Fridlyand <[email protected]>

---------

Signed-off-by: Mitchell Gale <[email protected]>
Signed-off-by: Yury-Fridlyand <[email protected]>
Co-authored-by: Yury-Fridlyand <[email protected]>

Author: MitchellGale

build.gradle

@@ -84,7 +84,8 @@ repositories {
 spotless {
     java {
         target fileTree('.') {
-            include 'datasources/**/*.java',
+            include 'common/**/*.java',
+                    'datasources/**/*.java',
                     'core/**/*.java'
             exclude '**/build/**', '**/build-*/**'
         }