Add kudos for David Ostrovsky for maintaining the build toolchain

Change-Id: I8e5a4c906bfc39b844b2eddf88e6b343ac74226c
Signed-off-by: Edwin Kempin <ekempin@google.com>
diff --git a/pages/site/kudos.md b/pages/site/kudos.md
index e3014b2..0b32d4e 100644
--- a/pages/site/kudos.md
+++ b/pages/site/kudos.md
@@ -37,6 +37,26 @@
 
 ---
 
+**[2019-03-20] To: David Ostrovsky**
+
+```
+  Since years David is taking care of our build tool chain and ensures that the
+  development setup to start working on Gerrit and Gerrit plugins is staying
+  smooth.
+
+  David was the main driver to adopt first Buck and then Bazel. Rewriting the
+  complete build tool chain multiple times was a large amount of work and
+  included tracing down and fixing many tricky issues that required
+  collaboration with the Buck and Bazel teams.
+
+  I'm happy that the Gerrit build always just works, but I know that this can't
+  be taken for granted. Thanks David for all your hard work on this.
+```
+
+From: Edwin Kempin (Google)
+
+---
+
 **[2019-03-20] To: Shawn Pearce (Google)**
 
 ```