Fix travis validation of pkg:angular (#1952)

* Only run mac on one configuration

It's by far the slowest to run – a sniff test should be sufficient

Author: kevmoo

.travis.yml

@@ -12,9 +12,14 @@ env:
 script: ./tool/travis.sh
 
 os:
-  - osx
   - linux
 
+matrix:
+  include:
+  - env: DARTDOC_BOT=main
+    os: osx
+    dart: "dev/raw/latest"
+
 install:
 - ./tool/install_travis.sh
 

tool/travis.sh

@@ -27,7 +27,7 @@ elif [ "$DARTDOC_BOT" = "flutter" ]; then
   pub run grinder validate-flutter-docs
 elif [ "$DARTDOC_BOT" = "packages" ]; then
   echo "Running packages dartdoc bot"
-  if [ ${DART_VERSION} != 2.0.0 ] ; then
+  if [ ${DART_VERSION} != 2.2.0 ] ; then
     PACKAGE_NAME=angular PACKAGE_VERSION=">=5.1.0" DARTDOC_PARAMS="--include=angular,angular.security" pub run grinder build-pub-package
   else
     PACKAGE_NAME=angular PACKAGE_VERSION=">=5.0.0-beta <5.1.0" DARTDOC_PARAMS="--include=angular,angular.security" pub run grinder build-pub-package