Import GPG public key into KEYS

Author: Eugene <liujin@apache.org>

Closes #498 from toyboxman/key.
diff --git a/KEYS b/KEYS
index 802b0c2..1173ae2 100644
--- a/KEYS
+++ b/KEYS
@@ -172,3 +172,52 @@
 3OmWOig=
 =me+d
 -----END PGP PUBLIC KEY BLOCK-----
+
+pub   rsa3072 2019-04-04 [SC]
+      DEB7B22DE1FDD7BE93368A231033FD5FC7A80CB5
+uid           [ultimate] Eugene (Apache Griffin Community) <liujin@apache.org>
+sig 3        1033FD5FC7A80CB5 2019-04-04  Eugene (Apache Griffin Community) <liujin@apache.org>
+sub   rsa3072 2019-04-04 [E]
+sig          1033FD5FC7A80CB5 2019-04-04  Eugene (Apache Griffin Community) <liujin@apache.org>
+
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
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+=3Fn/
+-----END PGP PUBLIC KEY BLOCK-----