smalltown -> metropolis

This pass removes all mentions of Smalltown, both from code and comments,
and replaces them with appropriate new terminology.

Test Plan: Refactor, covered by CI.

X-Origin-Diff: phab/D674
GitOrigin-RevId: 04a94d44ef07d46f7821530da5614daefe16d7ea
diff --git a/third_party/go/patches/k8s-kubernetes.patch b/third_party/go/patches/k8s-kubernetes.patch
index 8b766a6..411e009 100644
--- a/third_party/go/patches/k8s-kubernetes.patch
+++ b/third_party/go/patches/k8s-kubernetes.patch
@@ -13,7 +13,7 @@
 limitations under the License.
 
 
-This fixes OpenAPI codegen for when included from the Smalltown workspace. It basically undoes vendorification.
+This fixes OpenAPI codegen for when included from the Monogon workspace. It basically undoes vendorification.
 
 diff -ur io_k8s_kubernetes.orig/build/code_generation.bzl io_k8s_kubernetes/build/code_generation.bzl
 --- io_k8s_kubernetes.orig/build/code_generation.bzl	2020-04-15 13:43:57.785669620 +0200
@@ -402,4 +402,4 @@
 +    package = "generated",
  )
 
- filegroup(
\ No newline at end of file
+ filegroup(