add pattern excludes for binary files

Original commit: elastic/x-pack-elasticsearch@f1077e35f8

qa/security-tools-tests/build.gradle

@@ -10,5 +10,12 @@ dependencies {
 // add test resources from security, so certificate tool tests can use example certs
 sourceSets.test.resources.srcDirs(project(':x-pack-elasticsearch:plugin:security').sourceSets.test.resources.srcDirs)
 
+// we have to repeate these patterns because the security test resources are effectively in the src of this project
+forbiddenPatterns {
+  exclude '**/*.key'
+  exclude '**/*.p12'
+  exclude '**/*.der'
+}
+
 // these are just tests, no need to audit
 thirdPartyAudit.enabled = false