Add REE to GHA

Author: JonRowe

ci/.github/workflows/ci.yml

@@ -78,6 +78,9 @@ jobs:
             tag: rspec/ci:2.0.0
           - version: "1.9.3"
             tag: rspec/ci:1.9.3
+          - version: "REE"
+            tag: rspec/ci:ree
+            options: "--add-host rubygems.org:151.101.0.70 --add-host api.rubygems.org:151.101.0.70"
           - version: "JRuby 1.7"
             tag: rspec/ci:jruby-1.7
           - version: "JRuby 1.7 1.8 mode"

ci/.travis.yml

@@ -14,7 +14,6 @@ script: "script/run_build"
 rvm:
   - 1.8.7
   - 1.9.2
-  - ree
 matrix:
   fast_finish: true
 branches: