*: developer machine HSPKI credentials

In addition to k8s certificates, prodaccess now issues HSPKI
certificates, with DN=$username.sso.hswaw.net. These are installed into
XDG_CONFIG_HOME (or os equiv).

//go/pki will now automatically attempt to load these certificates. This
means you can now run any pki-dependant tool with -hspki_disable, and
with automatic mTLS!

Change-Id: I5b28e193e7c968d621bab0d42aabd6f0510fed6d
diff --git a/go/pki/BUILD.bazel b/go/pki/BUILD.bazel
index 5bc7522..f2eae41 100644
--- a/go/pki/BUILD.bazel
+++ b/go/pki/BUILD.bazel
@@ -2,7 +2,10 @@
 
 go_library(
     name = "go_default_library",
-    srcs = ["grpc.go"],
+    srcs = [
+        "grpc.go",
+        "locate.go",
+    ],
     importpath = "code.hackerspace.pl/hscloud/go/pki",
     visibility = ["//visibility:public"],
     deps = [