Fix JRuby build on CI, with a suggestion from Travis CI support (#2040)

* Fix JRuby build on CI, with a suggestion from Travis CI support

per
hanami/helpers@13f30e2
per https://twitter.com/jodosha/status/823522145745731586

.travis.yml

@@ -7,12 +7,16 @@ rvm:
   - 2.2.6
   - 2.3.3
   - ruby-head
-  - jruby-9.0.4.0
+  - jruby-9.1.5.0 # is precompiled per http://rubies.travis-ci.org/
   - jruby-head
 
 jdk:
   - oraclejdk8
 
+before_install:
+  - gem update --system
+  - rvm @global do gem uninstall bundler -a -x
+  - rvm @global do gem install bundler -v 1.13.7
 install: bundle install --path=vendor/bundle --retry=3 --jobs=3
 cache:
   directories:
@@ -35,13 +39,13 @@ matrix:
   exclude:
   - rvm: 2.1
     env: RAILS_VERSION=master
-  - rvm: jruby-9.0.4.0
+  - rvm: jruby-9.1.5.0
     env: RAILS_VERSION=master
   - rvm: jruby-head
     env: RAILS_VERSION=master
   - rvm: 2.1
     env: RAILS_VERSION=5.0
-  - rvm: jruby-9.0.4.0
+  - rvm: jruby-9.1.5.0
     env: RAILS_VERSION=5.0
   - rvm: jruby-head
     env: RAILS_VERSION=5.0

appveyor.yml

@@ -1,4 +1,4 @@
-version: '{build}'
+version: 1.0.{build}-{branch}
 
 skip_tags: true
 
@@ -7,17 +7,23 @@ environment:
   matrix:
     - ruby_version: "Ruby21"
     - ruby_version: "Ruby21-x64"
-    - ruby_version: "jruby-9.0.0.0"
 
 cache:
   - vendor/bundle
 
 install:
   - SET PATH=C:\%ruby_version%\bin;%PATH%
-  - gem install bundler
+  - gem update --system
+  - gem uninstall bundler -a -x
+  - gem install bundler -v 1.13.7
   - bundle env
   - bundle install --path=vendor/bundle --retry=3 --jobs=3
 
+before_test:
+  - ruby -v
+  - gem -v
+  - bundle -v
+
 test_script:
   - bundle exec rake ci