don't run checkstyle or pmd on zipsigner, the format is too different

If someone wants to clean this up, feel free...

app/build.gradle

@@ -259,6 +259,7 @@ task pmdMain(type: Pmd) {
     ruleSets = [] // otherwise defaults clash with the list in rules.xml
     source 'src/main/java'
     include '**/*.java'
+    exclude '**/kellinwood/**/*.java'
 }
 
 task pmdTest(type: Pmd) {

config/checkstyle/checkstyle.xml

@@ -142,4 +142,7 @@
       <property name="influenceFormat" value="1"/>
     </module>
 
+    <module name="SuppressionFilter">
+      <property name="file" value="config/checkstyle/suppressions.xml"/>
+    </module>
 </module>

config/checkstyle/suppressions.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0"?>
+<!DOCTYPE suppressions PUBLIC
+"-//Puppy Crawl//DTD Suppressions 1.1//EN"
+"http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+<suppressions>
+  <suppress checks="." files="[\\/]kellinwood[\\/].*\.java$"/>
+</suppressions>