Update travis and appveyor build settings to include rel branches

.travis.yml

@@ -1,39 +1,23 @@
 language: csharp
-sudo: required
+sudo: false
 dist: trusty
-addons:
-  apt:
-    packages:
-    - gettext
-    - libcurl4-openssl-dev
-    - libicu-dev
-    - libssl-dev
-    - libunwind8
-    - zlib1g
 env:
   global:
     - DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
     - DOTNET_CLI_TELEMETRY_OPTOUT: 1
-mono:
-  - 4.0.5
+mono: none
 os:
   - linux
   - osx
-osx_image: xcode7.3
+osx_image: xcode8.2
 branches:
   only:
     - master
     - release
     - dev
+    - /^rel\//
     - /^(.*\/)?ci-.*$/
-    - /^feature\//
 before_install:
   - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install openssl; ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/; ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/; fi
 script:
   - ./build.sh
-notifications:
-  webhooks:
-    secure: "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"
-  on_success: always
-  on_failure: always
-  on_start: always

appveyor.yml

@@ -4,6 +4,7 @@ branches:
   only:
     - master
     - release
+    - /^rel\/.*/
     - dev
     - /^(.*\/)?ci-.*$/
 build_script: