cert bundle: add server_root.pem incase bundle needs to be regenerated

components/mbedtls/test/server_root.pem

@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----
+MIIDpTCCAo2gAwIBAgIUduK+lv/MILT278PPIYz8HkFzhFUwDQYJKoZIhvcNAQEL
+BQAwYjELMAkGA1UEBhMCQ04xEzARBgNVBAgMClNvbWUtU3RhdGUxETAPBgNVBAcM
+CFNoYW5naGFpMRIwEAYDVQQKDAlFc3ByZXNzaWYxFzAVBgNVBAMMDkVzcHJlc3Np
+ZiBSb290MB4XDTIwMDMyNjA2NDAxMFoXDTI1MDMyNjA2NDAxMFowYjELMAkGA1UE
+BhMCQ04xEzARBgNVBAgMClNvbWUtU3RhdGUxETAPBgNVBAcMCFNoYW5naGFpMRIw
+EAYDVQQKDAlFc3ByZXNzaWYxFzAVBgNVBAMMDkVzcHJlc3NpZiBSb290MIIBIjAN
+BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp9ILzOjsz7dZbABUIoDCBat3MPsv
+qd20Jsk3GzkLjY/HjTCMBweq2zt0sRsa+YwCPtQyAsYPtgt/VzRY4TF8jqmSj7Ko
+DKOWkbim0O0XDAT8DfkQ32pZC7DnAw/374Vmm/ZmN/yE4zNUjNbjO2weswczcSdL
+B3ITsa+OquKYK8J2Pe5gZh/tC0f0I9ks3UplcLyEex8TQZivAK3RL4QWj4j4NJWn
+wH5qdizuKStwWEo3FvTP4g95SQItw31HTA8mJcBzCZC0NOZyMckRSmK51XljQ0iU
+G7KwK8GNbDC+VUZEt5aGB5QZhCFC2wo5An7u20UHRUWbv4MEgddPDoQ4EwIDAQAB
+o1MwUTAdBgNVHQ4EFgQU3inIjbdXp/DgSnVAiJmTlAtKH08wHwYDVR0jBBgwFoAU
+3inIjbdXp/DgSnVAiJmTlAtKH08wDwYDVR0TAQH/BAUwAwEB/zANBgkqhkiG9w0B
+AQsFAAOCAQEAOpLjyXj2e0IaUgJK3lGuJ9u6piehYK1WqPoCR7K7pUnFGyNLu0mq
+yfTqNoXV8a7NmM8Vn8ZJ1Gep20JqgvR27o3OE87bT7E/JPUsvbu7MNdfiVxpFWi1
+HxdBrzHr+mcakbhRxI38s3GVNT9Y89Y7FZbE+dqT8SxILk2pVUExfZR/ItazDTxl
+95ARCOj/bQPCEN+oLYzS31ORmkJfY2AuJAcJUTCyO4UfpKVFmQeAKlNmTq9Q0a6C
+0RlbzZ/PJoB3d265A9fTjlANQ7XzE8GgIJVR7cz5OJzZVxfEr9ME9VfgNrjKyXS3
+FcFQvif6JqX6IbmTenEKi7IfgX2zu1nxtQ==
+-----END CERTIFICATE-----