HADOOP-13412. Move dev-support/checkstyle/suppressions.xml to hadoop-build-tools. Contributed by John Zhuge.

(cherry picked from commit cd099a63d58c6981c45db2b169430d4935e43bd1)

pom.xml

@@ -210,7 +210,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
           </dependencies>
           <configuration>
             <configLocation>checkstyle/checkstyle.xml</configLocation>
-            <suppressionsLocation>dev-support/checkstyle/suppressions.xml</suppressionsLocation>
+            <suppressionsLocation>checkstyle/suppressions.xml</suppressionsLocation>
             <includeTestSourceDirectory>true</includeTestSourceDirectory>
             <failOnViolation>false</failOnViolation>
             <format>xml</format>