Add tls support for dns endpoints

Add ca_file to tls_config

Change-Id: I58c38cbc2ff1ba9120dfb24a61a73dc8973d74fa
PROD-related: PROD-29177 (PROD:29177)
(cherry picked from commit c216f47d7a361b020b6076a0b7a962907e3efca3)
1 file changed