Increase "testing at HEAD" matrix

In our cron runs, we now run these tests four different ways:

- Latest Released CLI, Latest Released Packages
- Latest Unreleased CLI, Latest Unreleased Packages
- (NEW) Latest Released CLI, Latest Unreleased Packages
- (NEW) Latest Unreleased CLI, Latest Released Packages

This should give us much better coverage on CLI/Package
mismatches.

.travis.yml

@@ -39,9 +39,15 @@ before_script:
 jobs:
  include:
  - script: make travis_${TRAVIS_EVENT_TYPE}
- - stage: latest
+ - stage: latest-all
  if: type = cron
  script: "${GOPATH}/src/github.com/pulumi/scripts/ci/run-at-head"
+ - stage: latest-cli
+ if: type = cron
+ script: "${GOPATH}/src/github.com/pulumi/scripts/ci/run-at-head --no-latest-packages"
+ - stage: latest-packages
+ if: type = cron
+ script: "${GOPATH}/src/github.com/pulumi/scripts/ci/run-at-head --no-latest-cli"
 after_failure:
  - "${PULUMI_SCRIPTS}/ci/upload-failed-tests"
 notifications: