Baseline the maintainers (opensearch-project#770)

Signed-off-by: Rishabh Maurya <[email protected]>

.github/CODEOWNERS

@@ -1,2 +1 @@
-# This should match the owning team set up in https://github.com/orgs/opensearch-project/teams
-*   @opensearch-project/index-management
+*   @bowenlan-amzn @getsaurabh02 @lezzago @praveensameneni

MAINTAINERS.md

@@ -8,10 +8,5 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | ---------------- | ----------------------------------------------------- | ----------- |
 | Ashish Agrawal   | [lezzago](https://github.com/lezzago)                 | Amazon      |
 | Bowen Lan        | [bowenlan-amzn](https://github.com/bowenlan-amzn)     | Amazon      |
-| Charlotte        | [CEHENKLE](https://github.com/CEHENKLE)               | Amazon      |
-| Drew Baugher     | [dbbaughe](https://github.com/dbbaughe)               | Amazon      |
-| Mohammad Qureshi | [qreshi](https://github.com/qreshi)                   | Amazon      |
-| Nick Knize       | [nknize](https://github.com/nknize)                   | Amazon      |
 | Praveen Sameneni | [praveensameneni](https://github.com/praveensameneni) | Amazon      |
-| Ravi             | [thalurur](https://github.com/thalurur)               | Amazon      |
-| Sriram           | [skkosuri-amzn](https://github.com/skkosuri-amzn)     | Amazon      |
+| Saurabh Singh    | [getsaurabh02](https://github.com/getsaurabh02/)      | Amazon      |