travis: remove deprecated 'sudo: required'

As reported by travis lint: [x] [warn] on root: deprecated key: sudo (The key `sudo` has no effect anymore.) Also copy to the top of the file well-tested .travis.yml tips from sof/linux/.travis.yml Signed-off-by: Marc Herbert <marc.herbert@intel.com>
iganakov · Sep 17, 2020 · 81b21c3 · 81b21c3
1 parent 1336cac
commit 81b21c3
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,9 @@
-sudo: required
+---
+# Suggested tools that can save round-trips to github and a lot of time:
+#
+# yamllint .travis.yml
+# ~/.gem/ruby/2.7.0/bin/travis lint .travis.yml
+# yaml merge-expand .travis.yml exp.yml && diff -b -u .travis.yml exp.yml
 
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