From: Jakub Jirutka <jakub@jirutka.cz>
Date: Fri, 20 May 2017 01:35:00 +0200
Subject: [PATCH] Use system CA certificates

--- a/src/ruby/lib/grpc.rb
+++ b/src/ruby/lib/grpc.rb
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-ssl_roots_path = File.expand_path('../../../../etc/roots.pem', __FILE__)
+ssl_roots_path = '/etc/ssl/certs/ca-certificates.crt'
 
 require_relative 'grpc/errors'
 require_relative 'grpc/structs'