yarn needs to be installed

Signed-off-by: dheerajd-msys <[email protected]>

.expeditor/verify.pipeline.yml

@@ -0,0 +1,27 @@
+---
+expeditor:
+  cached_folders:
+    - vendor
+  defaults:
+    buildkite:
+      timeout_in_minutes: 30
+
+steps:
+
+#########################################################################
+  # Component Tests
+#########################################################################
+
+- label: omnibus
+  command:
+    - /workdir/scripts/bk_tests/bk_install.sh
+    - gem uninstall bundler -v '>= 2.0.1' -a
+    - cd /workdir/omnibus; make install
+    - make ci
+  expeditor:
+    executor:
+      docker:
+        image: "chefes/a1-buildkite"
+        environment:
+          - LUALIB=~/.luarocks/lib/lua/5.2
+          - COMPONENT=omnibus

scripts/bk_tests/bk_install.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -e
+
+echo  "Installing test dependencies"
+apt-get update -y
+apt-get install npm -y
+npm install yarn -g
+