chore: Set bom parent as shared-config (#1887)

* chore: Set bom parent as shared-config

* chore: Skip checkstyle for bom

* chore: Use relative path for license-check

* chore: Ignore checkstyle in BOM

Author: lqiu96

gax-bom/pom.xml

@@ -7,13 +7,13 @@
   <packaging>pom</packaging>
   <name>GAX (Google Api eXtensions) for Java (BOM)</name>
   <description>Google Api eXtensions for Java (BOM)</description>
-  <url>https://github.com/googleapis/gax-java</url>
-  <licenses>
-    <license>
-      <name>BSD</name>
-      <url>https://github.com/googleapis/gax-java/blob/master/LICENSE</url>
-    </license>
-  </licenses>
+
+  <parent>
+    <groupId>com.google.cloud</groupId>
+    <artifactId>google-cloud-shared-config</artifactId>
+    <version>1.5.4</version>
+  </parent>
+
   <developers>
     <developer>
       <id>GoogleAPIs</id>
@@ -24,10 +24,19 @@
       <organizationUrl>https://www.google.com</organizationUrl>
     </developer>
   </developers>
+
   <scm>
     <connection>scm:git:https://github.com/googleapis/gax-java.git</connection>
     <url>https://github.com/googleapis/gax-java</url>
   </scm>
+
+  <licenses>
+    <license>
+      <name>BSD</name>
+      <url>https://github.com/googleapis/gax-java/blob/master/LICENSE</url>
+    </license>
+  </licenses>
+
   <dependencyManagement>
     <dependencies>
       <dependency>
@@ -65,4 +74,16 @@
       </dependency>
     </dependencies>
   </dependencyManagement>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-checkstyle-plugin</artifactId>
+        <configuration>
+          <skip>true</skip>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
 </project>

license-checks.xml

@@ -5,6 +5,6 @@
 <module name="Checker">
   <module name="RegexpHeader">
     <property name="fileExtensions" value="java"/>
-    <property name="headerFile" value="java.header"/>
+    <property name="headerFile" value="${checkstyle.header.file}"/>
   </module>
 </module>