Update JRuby to 9.1.17

Author: byroot

.travis.yml

@@ -13,7 +13,7 @@ rvm:
   - 2.3.3
   - 2.4.1
   - 2.5.0
-  - jruby-9.1.15.0
+  - jruby-9.1.17.0
 
 gemfile: ".travis/Gemfile"
 
@@ -44,30 +44,18 @@ branches:
 matrix:
   exclude:
     # hiredis
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: .travis/Gemfile
-      env: DRIVER=hiredis REDIS_BRANCH=3.0
-    - rvm: jruby-9.1.15.0
+      env: DRIVER=hiredis   REDIS_BRANCH=3.0
+    - rvm: jruby-9.1.17.0
       gemfile: .travis/Gemfile
-      env: DRIVER=hiredis REDIS_BRANCH=3.2
-    - rvm: jruby-9.1.15.0
-      gemfile: .travis/Gemfile
-      env: DRIVER=hiredis REDIS_BRANCH=3.0
-    - rvm: jruby-9.1.15.0
-      gemfile: .travis/Gemfile
-      env: DRIVER=hiredis REDIS_BRANCH=3.2
+      env: DRIVER=hiredis   REDIS_BRANCH=3.2
 
     # synchrony
-    - rvm: jruby-9.1.15.0
-      gemfile: .travis/Gemfile
-      env: DRIVER=synchrony REDIS_BRANCH=3.0
-    - rvm: jruby-9.1.15.0
-      gemfile: .travis/Gemfile
-      env: DRIVER=synchrony REDIS_BRANCH=3.2
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: .travis/Gemfile
       env: DRIVER=synchrony REDIS_BRANCH=3.0
-    - rvm: jruby-9.1.15.0
+    - rvm: jruby-9.1.17.0
       gemfile: .travis/Gemfile
       env: DRIVER=synchrony REDIS_BRANCH=3.2