Add missing namespace and XSD to SpotBugs filter file.
diff --git a/conf/findbugs-exclude-filter.xml b/conf/findbugs-exclude-filter.xml
index 5c9949d..bd13e25 100644
--- a/conf/findbugs-exclude-filter.xml
+++ b/conf/findbugs-exclude-filter.xml
@@ -24,7 +24,7 @@
<FindBugsFilter
xmlns="https://github.com/spotbugs/filter/3.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="https://github.com/spotbugs/filter/3.0.0 https://raw.githubusercontent.com/spotbugs/spotbugs/3.1.0/spotbugs/etc/findbugsfilter.xsd"><!-- N.B. Using wild-card class names so exclusions work regardless of the top-level package -->
+ xsi:schemaLocation="https://github.com/spotbugs/filter/3.0.0 https://raw.githubusercontent.com/spotbugs/spotbugs/3.1.0/spotbugs/etc/findbugsfilter.xsd">
<!-- the javadoc states that the default character encoding is used -->
<!-- when converting a string into a byte[] -->