Change ci.bazel.io status badges to use https.
RELNOTES: None.
@@ -45,7 +45,7 @@ Build and test software of any size, quickly and reliably.
See [CONTRIBUTING.md](CONTRIBUTING.md)
-[![Build Status](http://ci.bazel.io/buildStatus/icon?job=bazel-tests)](http://ci.bazel.io/job/bazel-tests)
+[![Build Status](https://ci.bazel.io/buildStatus/icon?job=bazel-tests)](https://ci.bazel.io/job/bazel-tests)
Bazel is released in 'Beta'.
See the [product roadmap](https://bazel.build/roadmap.html) to learn about the
