Update OS kitchen tests dependencies

Related: PROD-26476 (PROD:26476)

Change-Id: Iede4c47fe483a73a2f50f6b82f20b01dc866afff
diff --git a/Gemfile b/Gemfile
index 408029d..c58ebb8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,6 +4,7 @@
 gem 'test-kitchen'
 if File.exist?('.kitchen.openstack.yml') then
   gem 'kitchen-openstack'
+  gem 'berkshelf'
 else
   gem 'kitchen-docker'
 end
diff --git a/bootstrap-openstack-kitchen.sh b/bootstrap-openstack-kitchen.sh
deleted file mode 100755
index 3da420f..0000000
--- a/bootstrap-openstack-kitchen.sh
+++ /dev/null
@@ -1,29 +0,0 @@
-#!/bin/bash -xe
-# We do install from sources, as ohaio gem requires ruby2.4+, while Ubuntu xenial has 2.3 only
-# If we want to have yet another ppa instead of sources build, just replase it.
-# TODO(dstremkouski). Check if ppa is applicable here.
-apt update
-apt -y install python-pip autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev wget git ruby-dev curl dnsutils rbenv
-pip install PyYAML
-pip install virtualenv
-
-git clone https://github.com/rbenv/rbenv.git ~/.rbenv
-echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
-echo 'eval "$(rbenv init -)"' >> ~/.bashrc
-source ~/.bashrc
-type rbenv
-git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
-rbenv install 2.5.0
-rbenv global 2.5.0
-gem install kitchen-openstack
-gem install berkshelf
-gem install bundler
-cat > Gemfile <<EOF
-source 'https://rubygems.org'
-gem 'rake'
-gem 'test-kitchen'
-gem 'kitchen-inspec'
-gem 'inspec'
-gem 'kitchen-salt', :git => 'https://github.com/salt-formulas/kitchen-salt.git'
-EOF
-bundle install