build: switch to GitHub magic proxy (#440)

Author: Benjamin E. Coe

.kokoro/continuous/node10/test.cfg

@@ -8,12 +8,30 @@ before_action {
   }
 }
 
-# token used by release-please to keep an up-to-date release PR.
+# tokens used by release-please to keep an up-to-date release PR.
 before_action {
   fetch_keystore {
     keystore_resource {
       keystore_config_id: 73713
-      keyname: "yoshi-automation-github-key"
+      keyname: "github-magic-proxy-key-release-please"
+    }
+  }
+}
+
+before_action {
+  fetch_keystore {
+    keystore_resource {
+      keystore_config_id: 73713
+      keyname: "github-magic-proxy-token-release-please"
+    }
+  }
+}
+
+before_action {
+  fetch_keystore {
+    keystore_resource {
+      keystore_config_id: 73713
+      keyname: "github-magic-proxy-url-release-please"
     }
   }
 }

.kokoro/test.sh

@@ -36,10 +36,11 @@ else
   echo "coverage is only reported for Node $COVERAGE_NODE"
 fi
 
-# if the GITHUB_TOKEN is set, we kick off a task to update the release-PR.
-GITHUB_TOKEN=$(cat $KOKORO_KEYSTORE_DIR/73713_yoshi-automation-github-key) || true
-if [ "$GITHUB_TOKEN" ]; then
-  npx release-please release-pr --token=$GITHUB_TOKEN \
+# if release-please keys set, we kick off a task to update the release-PR.
+if [ -f ${KOKORO_KEYSTORE_DIR}/73713_github-magic-proxy-url-release-please ]; then
+  npx release-please release-pr --token=${KOKORO_KEYSTORE_DIR}/73713_github-magic-proxy-token-release-please \
     --repo-url=googleapis/nodejs-datastore \
-    --package-name=@google-cloud/datastore
+    --package-name=@google-cloud/datastore \
+    --api-url=${KOKORO_KEYSTORE_DIR}/73713_github-magic-proxy-url-release-please \
+    --proxy-key=${KOKORO_KEYSTORE_DIR}/73713_github-magic-proxy-key-release-please
 fi

synth.metadata

@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-06-12T11:13:06.532088Z",
+  "updateTime": "2019-06-18T01:00:06.903003Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.24.1",
-        "dockerImage": "googleapis/artman@sha256:6018498e15310260dc9b03c9d576608908ed9fbabe42e1494ff3d827fea27b19"
+        "version": "0.26.0",
+        "dockerImage": "googleapis/artman@sha256:6db0735b0d3beec5b887153a2a7c7411fc7bb53f73f6f389a822096bd14a3a15"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "f117dac435e96ebe58d85280a3faf2350c4d4219",
-        "internalRef": "252714985"
+        "sha": "384aa843867c4d17756d14a01f047b6368494d32",
+        "internalRef": "253675319"
       }
     },
     {