core: replace zap with logtree

Test Plan: Effective refactor. Only tests that could be affected are e2e tests that should continue to run, because we still are logging into the qemu console, even if differently.

X-Origin-Diff: phab/D642
GitOrigin-RevId: 0f12b1bc985af08a3cc269569273184321763e4b
diff --git a/core/internal/kubernetes/pki/BUILD.bazel b/core/internal/kubernetes/pki/BUILD.bazel
index e188bfa..ab45382 100644
--- a/core/internal/kubernetes/pki/BUILD.bazel
+++ b/core/internal/kubernetes/pki/BUILD.bazel
@@ -11,9 +11,9 @@
     visibility = ["//core:__subpackages__"],
     deps = [
         "//core/internal/common:go_default_library",
+        "//core/pkg/logtree:go_default_library",
         "@io_etcd_go_etcd//clientv3:go_default_library",
         "@io_k8s_client_go//tools/clientcmd:go_default_library",
         "@io_k8s_client_go//tools/clientcmd/api:go_default_library",
-        "@org_uber_go_zap//:go_default_library",
     ],
 )