Install cookbook deps

Author: hgreebe

cookbooks/aws-parallelcluster-platform/recipes/install/cookbook_virtualenv.rb

@@ -35,14 +35,20 @@
   action :create_if_missing
 end
 
+cookbook_file "#{cookbook_virtualenv_path}/requirements.txt" do
+  source "cookbook_virtualenv/requirements.txt"
+  mode '0755'
+end
+
 bash 'pip install' do
   user 'root'
   group 'root'
-  cwd "#{node['cluster']['base_dir']}"
   code <<-REQ
-    set -e
-    tar xzf cookbook-dependencies.tgz
-    cd dependencies
-    #{virtualenv_path}/bin/pip install * -f ./ --no-index
+    #{virtualenv_path}/bin/pip install -r #{cookbook_virtualenv_path}/requirements.txt
+    if [ $? -ne 0 ]; then
+      tar xzf cookbook-dependencies.tgz
+      cd dependencies
+      #{virtualenv_path}/bin/pip install * -f ./ --no-index
+    fi
     REQ
 end