Merge pull request #15039 from markdroth/client_channel_owners

Replace a11r with AspirinSJL in client_channel OWNERS file.

.github/CODEOWNERS

@@ -4,6 +4,6 @@
 /**/OWNERS @markdroth @nicolasnoble @a11r
 /bazel/** @nicolasnoble @dgquintas @a11r @vjpai
 /cmake/** @jtattermusch @nicolasnoble @matt-kwong
-/src/core/ext/filters/client_channel/** @markdroth @dgquintas @a11r
+/src/core/ext/filters/client_channel/** @markdroth @dgquintas @AspirinSJL
 /tools/dockerfile/** @jtattermusch @matt-kwong @nicolasnoble
 /tools/run_tests/performance/** @ncteisen @matt-kwong @jtattermusch

src/core/ext/filters/client_channel/OWNERS

@@ -1,4 +1,4 @@
 set noparent
 @markdroth
 @dgquintas
-@a11r
+@AspirinSJL