back to not building all archs by default

Jenkinsfile

@@ -5,7 +5,7 @@ pipeline {
         timestamps()
     }
     parameters {
-        booleanParam(name: "BUILD_ALL", defaultValue: true, description: "Build all supported platform/architecture combos.  Defaults to x86/x64 only")
+        booleanParam(name: "BUILD_ALL", defaultValue: false, description: "Build all supported platform/architecture combos.  Defaults to x86/x64 only")
     }
     environment {
         PATH = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/go/bin:/home/jenkins-build/go/bin"