Merge branch 'use-atlassian-jwt-gem-ce' into 'master'

[CE] Use atlassian-jwt-ruby gem

See merge request gitlab-org/gitlab-ce!32519

Gemfile

@@ -216,6 +216,7 @@ gem 'hipchat', '~> 1.5.0'
 
 # Jira integration
 gem 'jira-ruby', '~> 1.7'
+gem 'atlassian-jwt', '~> 0.2.0'
 
 # Flowdock integration
 gem 'flowdock', '~> 0.7'

Gemfile.lock

@@ -1028,6 +1028,7 @@ DEPENDENCIES
   asciidoctor (~> 2.0.10)
   asciidoctor-include-ext (~> 0.3.1)
   asciidoctor-plantuml (= 0.0.9)
+  atlassian-jwt (~> 0.2.0)
   attr_encrypted (~> 3.1.0)
   awesome_print
   babosa (~> 1.0.2)