Fix Travis + misc cleanup (#2389)

.travis.yml

@@ -14,6 +14,8 @@ rvm:
   - 2.3
   - 2.4
   - 2.5
+  - 2.6
+  - 2.7
   - jruby-9.1
   - jruby-9.2
 
@@ -23,7 +25,8 @@ env:
   - PURE_RUBY=1
   - KITCHEN_SINK=1
 
-script: bundle exec rake
+# Disable Ruby warnings (Struct::Tms deprecation for 2.6+)
+script: RUBYOPT='-W0' bundle exec rake
 
 bundler_args: --without docs release repl
 
@@ -38,11 +41,3 @@ matrix:
       env: OLD_OJ=1
     - rvm: 2.3
       env: OLD_OX=1
-
-notifications:
-  webhooks:
-    urls:
-      - "https://webhooks.gitter.im/e/4442efd380ec811746d9"
-    on_success: change
-    on_failure: always
-    on_start: false

UPGRADING.md

@@ -38,12 +38,12 @@
   credential provider chain, and for default region selection. Since these
   changes could technically be a breaking change to default (and commonly used)
   behavior, there is a feature flag around this functionality.
-  
+
   To use these new features, you must set the `AWS_SDK_LOAD_CONFIG` environment
   variable. If not set, the existing default behavior will continue.
-  
+
   Two other upgrading notes are worth keeping in mind for this release:
-  
+
   * Private interfaces regarding handling of configuration were changed for this
     feature. Those interfaces were marked `@api private`, signifying that they
     should not have been used outside the SDK for development. If you were
@@ -424,4 +424,4 @@ changes before 2.0.0 final.
 
 # Upgrading from v1?
 
-Please see [MIGRATING.md](https://github.com/aws/aws-sdk-ruby/blob/master/MIGRATING.md)
+Please see [MIGRATING.md](https://github.com/aws/aws-sdk-ruby/blob/version-2/MIGRATING.md)

aws-sdk-core/spec/aws/polly/presigner_spec.rb

@@ -48,7 +48,7 @@ module Polly
             "us-west-2%2Fpolly%2Faws4_request&"\
             "X-Amz-Date=20160101T112233Z&X-Amz-Expires=900&"\
             "X-Amz-SignedHeaders=host&"\
-            "X-Amz-Signature=956ef486286b12f43ffc02dd09eae03cfea4cd8dfb30e0fab3f23de4e131195a"
+            "X-Amz-Signature=acb554087d5e340223b3415c79618adeb5c2b6dba19ba91771fbbe1d50a78f3d"
 
           pre = Presigner.new(region: region, credentials: credentials)
           params = {