[release 3.9] Reverting the PATH for cfnbootstrap (#2738)

* [Bug] Adding different values for `kernel-open` option

* Revert "Changing the PATH order we set for using the cfnbootstrap script we have installed in virtualenv rather than using default scripts (#2730)"

This reverts commit 26a3c9d.

---------

Co-authored-by: Himani Deshpande <himanidp@amazon.com>
Co-authored-by: Enrico Usai <10634438+enrico-usai@users.noreply.github.com>

cookbooks/aws-parallelcluster-environment/templates/cfn_bootstrap/pcluster.sh.erb

@@ -2,6 +2,7 @@
 # pcluster.sh:
 #   Setup ParallelCluster environment variables
 #
-PATH=<%= @cfn_bootstrap_virtualenv_path %>/bin:$PATH
+
+PATH=$PATH:<%= @cfn_bootstrap_virtualenv_path %>/bin
 
 export PATH

cookbooks/aws-parallelcluster-environment/test/controls/cfn_bootstrap_spec.rb

@@ -36,12 +36,6 @@
     its('mode') { should cmp '0644' }
     its('owner') { should eq 'root' }
     its('group') { should eq 'root' }
-    its('content') { should match "PATH=#{pyenv_dir}/versions/#{cfn_python_version}/envs/cfn_bootstrap_virtualenv/bin:\\$PATH" }
+    its('content') { should match "PATH=\\$PATH:#{pyenv_dir}/versions/#{cfn_python_version}/envs/cfn_bootstrap_virtualenv/bin" }
   end
-
-  desc "cfn-init needs to be from the cfnbootstrap virtualenv"
-  describe bash("sudo -u #{node['cluster']['cluster_user']} -i which cfn-init") do
-    its('exit_status') { should eq(0) }
-    its('stdout') { should match("#{pyenv_dir}/versions/#{cfn_python_version}/envs/cfn_bootstrap_virtualenv/bin/cfn-init") }
-  end unless os_properties.on_docker?
 end