target hosted queue

The default queue in this cluster is `untrusted`, but we're trialing a
new queue: `hosted`. The agents on this queue are configured
differently, but I expect everything to Just Work.

Author: yob

.buildkite/pipeline.yml

@@ -6,6 +6,8 @@ env:
 
 steps:
   - label: ":shell: Shellcheck"
+    agents:
+      queue: "hosted"
     plugins:
       shellcheck#v1.3.0:
         files:
@@ -14,12 +16,16 @@ steps:
           - commands/**
 
   - label: ":sparkles: Lint"
+    agents:
+      queue: "hosted"
     plugins:
       plugin-linter#v3.3.0:
         id: docker-compose
         readme: docs/examples.md
 
   - label: ":bash: Tests"
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         run: tests
@@ -31,12 +37,16 @@ steps:
 
   - label: run, with links that fail
     command: echo hello from alpine
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         run: alpinewithfailinglink
         config: tests/composefiles/docker-compose.v2.1.yml
 
   - label: run, with environment
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         run: alpinewithenv
@@ -45,6 +55,8 @@ steps:
           - ALPACAS=sometimes
 
   - label: run, with multi-line command
+    agents:
+      queue: "hosted"
     command: |
       echo \
       hello \
@@ -59,6 +71,8 @@ steps:
     env:
       PERSIST_REGISTRY: true
     command: /hello
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         build: helloworld
@@ -69,6 +83,8 @@ steps:
     depends_on: prebuild-2-0
     env:
       RESTORE_REGISTRY_FROM: prebuild-2-0
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         run: helloworld
@@ -81,6 +97,8 @@ steps:
     env:
       PERSIST_REGISTRY: true
     command: /hello
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         build: helloworld
@@ -91,6 +109,8 @@ steps:
     depends_on: prebuild-2-1
     env:
       RESTORE_REGISTRY_FROM: prebuild-2-1
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         run: helloworld
@@ -102,6 +122,8 @@ steps:
     key: prebuild-custom-image-name
     env:
       PERSIST_REGISTRY: true
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         build: helloworld
@@ -113,6 +135,8 @@ steps:
     key: run-custom-image-name
     env:
       RESTORE_REGISTRY_FROM: prebuild-custom-image-name
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         run: helloworld
@@ -124,6 +148,8 @@ steps:
     depends_on: run-custom-image-name
     env:
       RESTORE_REGISTRY_FROM: prebuild-custom-image-name
+    agents:
+      queue: "hosted"
     plugins:
       ${BUILDKITE_PULL_REQUEST_REPO:-$BUILDKITE_REPO}#${BUILDKITE_COMMIT}:
         push: helloworld:${IMAGE_REPO}:llamas-build-${BUILDKITE_BUILD_NUMBER}-push