Set default ciphers, set tls 1.2 via config, set curve prefs (#9315)

Config Checks at StartUp Part1

Config Checks; Tests for TLS Server

HSTS header implementation + tests

make gofmt happy with new go version...

make gofmt happy with new go version #2...

fix logic bug

fix typo

Fix unnecessary code block

1 files changed, 12 insertions, 0 deletions

diff --git a/i18n/en.json b/i18n/en.json
index db325eee0..d5a6f519a 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -4315,6 +4315,18 @@
     "translation": "Invalid value for webserver connection security."
   },
   {
+    "id": "model.config.is_valid.tls_cert_file.app_error",
+    "translation": "Invalid value for TLS certificate file - Either use LetsEncrypt or set path to existing certificate file"
+  },
+  {
+    "id": "model.config.is_valid.tls_key_file.app_error",
+    "translation": "Invalid value for TLS key file - Either use LetsEncrypt or set path to existing key file"
+  },
+  {
+    "id": "model.config.is_valid.tls_overwrite_cipher.app_error",
+    "translation": "Invalid value passed for TLS overwrite cipher - Please refer to the documentation for valid values"
+  },
+  {
     "id": "model.config.is_valid.websocket_url.app_error",
     "translation": "Websocket URL must be a valid URL and start with ws:// or wss://"
   },