Move spotbugs-exclude-filter.xml to src/conf folder

Author: Gary Gregory

pom.xml

@@ -489,7 +489,7 @@ file comparators, endian transformation classes, and much more.
          </dependency>
         </dependencies>
         <configuration>
-          <excludeFilterFile>${basedir}/spotbugs-exclude-filter.xml</excludeFilterFile>
+          <excludeFilterFile>${basedir}/src/conf/spotbugs-exclude-filter.xml</excludeFilterFile>
         </configuration>
       </plugin>
       <plugin>
@@ -510,7 +510,7 @@ file comparators, endian transformation classes, and much more.
         <artifactId>spotbugs-maven-plugin</artifactId>
         <version>${commons.spotbugs.plugin.version}</version>
         <configuration>
-          <excludeFilterFile>${basedir}/spotbugs-exclude-filter.xml</excludeFilterFile>
+          <excludeFilterFile>${basedir}/src/conf/spotbugs-exclude-filter.xml</excludeFilterFile>
         </configuration>
       </plugin>
       <plugin>