Add Ravi Teja as a reviewer

I have thorough understanding of certificate-manager

Here is my contribution in this repository
https://github.com/openbmc/phosphor-certificate-manager/commits?author=raviteja-b

Thus, I apply to be a reviewer of this repo. Hope I can contribute
more and help the OpenBMC community.

Change-Id: Idc54cf25851d6b17ec27a376fc4ed3711c177b57
Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
diff --git a/OWNERS b/OWNERS
index 69c5834..82a4a64 100644
--- a/OWNERS
+++ b/OWNERS
@@ -37,6 +37,7 @@
 - nanzhoumails@gmail.com
 
 reviewers:
+- raviteja28031990@gmail.com
 - deepak.kodihalli.83@gmail.com
 
 matchers:
@@ -54,3 +55,6 @@
 - name: Nan Zhou
   email: nanzhoumails@gmail.com
   discord: Nan Zhou
+- name: Ravi Teja
+  email: raviteja28031990@gmail.com
+  discord: raviteja