(maint) update travis to not use bundle update --system

Author: DavidS

.travis.yml

@@ -10,8 +10,7 @@ before_install:
   - rm -f Gemfile.lock
   - "# Update system gems if requested. This is useful to temporarily workaround troubles in the test runner"
   - "# See https://github.com/puppetlabs/pdk-templates/commit/705154d5c437796b821691b707156e1b056d244f for an example of how this was used"
-  - "# Ignore exit code of SIGPIPE'd yes to not fail with shell's pipefail set"
-  - '[ -z "$RUBYGEMS_VERSION" ] || (yes || true) | gem update --system $RUBYGEMS_VERSION'
+  - '[ -z "$RUBYGEMS_VERSION" ] || gem update --system $RUBYGEMS_VERSION'
   - gem --version
   - bundle -v
 script:

metadata.json

@@ -79,5 +79,5 @@
   ],
   "pdk-version": "1.15.0",
   "template-url": "https://github.com/puppetlabs/pdk-templates#master",
-  "template-ref": "heads/master-0-g5676b3f"
+  "template-ref": "heads/master-0-gcaed9d7"
 }