Updates sample cert and admin keystore (#598) (#632)

(cherry picked from commit c05715b)

Signed-off-by: Darshit Chanpura <dchanp@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: opensearch-trigger-bot[bot]

src/test/resources/sample.pem

@@ -1,9 +1,9 @@
 -----BEGIN CERTIFICATE-----
-MIIEPDCCAySgAwIBAgIUZjrlDPP8azRDPZchA/XEsx0X2iIwDQYJKoZIhvcNAQEL
+MIIEPDCCAySgAwIBAgIUaYSlET3nzsotWTrWueVPPh10yLYwDQYJKoZIhvcNAQEL
 BQAwgY8xEzARBgoJkiaJk/IsZAEZFgNjb20xFzAVBgoJkiaJk/IsZAEZFgdleGFt
 cGxlMRkwFwYDVQQKDBBFeGFtcGxlIENvbSBJbmMuMSEwHwYDVQQLDBhFeGFtcGxl
 IENvbSBJbmMuIFJvb3QgQ0ExITAfBgNVBAMMGEV4YW1wbGUgQ29tIEluYy4gUm9v
-dCBDQTAeFw0yMzA4MjkwNDIzMTJaFw0zMzA4MjYwNDIzMTJaMFcxCzAJBgNVBAYT
+dCBDQTAeFw0yNDAyMjAxNzAzMjVaFw0zNDAyMTcxNzAzMjVaMFcxCzAJBgNVBAYT
 AmRlMQ0wCwYDVQQHDAR0ZXN0MQ0wCwYDVQQKDARub2RlMQ0wCwYDVQQLDARub2Rl
 MRswGQYDVQQDDBJub2RlLTAuZXhhbXBsZS5jb20wggEiMA0GCSqGSIb3DQEBAQUA
 A4IBDwAwggEKAoIBAQCm93kXteDQHMAvbUPNPW5pyRHKDD42XGWSgq0k1D29C/Ud
@@ -16,10 +16,10 @@ BEAwPogFKgMEBQWCEm5vZGUtMC5leGFtcGxlLmNvbYIJbG9jYWxob3N0hxAAAAAA
 AAAAAAAAAAAAAAABhwR/AAABMAsGA1UdDwQEAwIF4DAdBgNVHSUEFjAUBggrBgEF
 BQcDAQYIKwYBBQUHAwIwDAYDVR0TAQH/BAIwADAdBgNVHQ4EFgQU0/qDQaY10jIo
 wCjLUpz/HfQXyt8wHwYDVR0jBBgwFoAUF4ffoFrrZhKn1dD4uhJFPLcrAJwwDQYJ
-KoZIhvcNAQELBQADggEBAD2hkndVih6TWxoe/oOW0i2Bq7ScNO/n7/yHWL04HJmR
-MaHv/Xjc8zLFLgHuHaRvC02ikWIJyQf5xJt0Oqu2GVbqXH9PBGKuEP2kCsRRyU27
-zTclAzfQhqmKBTYQ/3lJ3GhRQvXIdYTe+t4aq78TCawp1nSN+vdH/1geG6QjMn5N
-1FU8tovDd4x8Ib/0dv8RJx+n9gytI8n/giIaDCEbfLLpe4EkV5e5UNpOnRgJjjuy
-vtZutc81TQnzBtkS9XuulovDE0qI+jQrKkKu8xgGLhgH0zxnPkKtUg2I3Aq6zl1L
-zYkEOUF8Y25J6WeY88Yfnc0iigI+Pnz5NK8R9GL7TYo=
+KoZIhvcNAQELBQADggEBAGbij5WyF0dKhQodQfTiFDb73ygU6IyeJkFSnxF67gDz
+pQJZKFvXuVBa3cGP5e7Qp3TK50N+blXGH0xXeIV9lXeYUk4hVfBlp9LclZGX8tGi
+7Xa2enMvIt5q/Yg3Hh755ZxnDYxCoGkNOXUmnMusKstE0YzvZ5Gv6fcRKFBUgZLh
+hUBqIEAYly1EqH/y45APiRt3Nor1yF6zEI4TnL0yNrHw6LyQkUNCHIGMJLfnJQ9L
+camMGIXOx60kXNMTigF9oXXwixWAnDM9y3QT8QXA7hej/4zkbO+vIeV/7lGUdkyg
+PAi92EvyxmsliEMyMR0VINl8emyobvfwa7oMeWMR+hg=
 -----END CERTIFICATE-----