title: Using strategy_regexp for the TestRunner action?
body: <p>The <em>TestRunner</em> action is excluded from strategies set using the command line
  parameter <em>strategy_regexp</em>. What are the reasons for not being able to map strategies
  for the <em>TestRunner</em>?
  In the code there is a comment on not overriding test strategies for
  backwards compatibility. Do you know what test strategies it may conflict with?</p>
  <p>Code that excludes the <em>TestRunner</em>:
  <a href="https://github.com/bazelbuild/bazel/blob/master/src/main/java/com/google/devtools/build/lib/exec/SpawnStrategyRegistry.java#L93" rel="nofollow noreferrer">https://github.com/bazelbuild/bazel/blob/master/src/main/java/com/google/devtools/build/lib/exec/SpawnStrategyRegistry.java#L93</a></p>
  <p>The background is that I would like to map individual C++ unit tests to remote execution but cannot find any support for that in Bazel? Is there perhaps some other mechanism that can be used for this?</p>
  <p>Kind regards,</p>
  <p>Jonas Hansson</p>