Add `unsafe: true` to source definitions of liblzma and libicu

config/projects/gitlab.rb

@@ -50,6 +50,7 @@ override :rubygems, version: 'v2.5.1'
 override :'chef-gem', version: '12.5.1'
 override :cacerts, version: '2016.01.20', source: { md5: '06629db7f712ff3a75630eccaecc1fe4' }
 override :pip, version: '7.1.2', source: { md5: '3823d2343d9f3aaab21cf9c917710196' }
+override :liblzma, source: { unsafe: true }
 # Openssh needs to be installed
 runtime_dependency "openssh-server"

config/software/libicu.rb

@@ -20,7 +20,8 @@ name "libicu"
 default_version "54.1"
 source :url => "http://download.icu-project.org/files/icu4c/54.1/icu4c-54_1-src.tgz",
-       :md5 => "e844caed8f2ca24c088505b0d6271bc0"
+       :md5 => "e844caed8f2ca24c088505b0d6271bc0",
+       :unsafe => true
 relative_path 'icu/source'