Implement LDAP Certificate (#15361)

* Implement LDAP Certificate

* add diagnostics and translations

* update from code review

* pass pointer to update pict function

* pass object to first function

* remove debug log messages

* update test to add localmode test

* update lint errors

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

i18n/en.json

@@ -59,6 +59,10 @@
     "id": "api.admin.add_certificate.open.app_error",
     "translation": "Could not open certificate file."
   },
+  {
+    "id": "api.admin.add_certificate.parseform.app_error",
+    "translation": "Error parsing multiform request"
+  },
   {
     "id": "api.admin.add_certificate.saving.app_error",
     "translation": "Could not save certificate file."
@@ -5490,10 +5494,18 @@
     "id": "ent.ldap.do_login.bind_admin_user.app_error",
     "translation": "Unable to bind to AD/LDAP server. Check BindUsername and BindPassword."
   },
+  {
+    "id": "ent.ldap.do_login.certificate.app_error",
+    "translation": "Error loading LDAP TLS Certificate file."
+  },
   {
     "id": "ent.ldap.do_login.invalid_password.app_error",
     "translation": "Invalid Password."
   },
+  {
+    "id": "ent.ldap.do_login.key.app_error",
+    "translation": "Error loading LDAP TLS Key file."
+  },
   {
     "id": "ent.ldap.do_login.licence_disable.app_error",
     "translation": "AD/LDAP functionality disabled by current license. Please contact your system administrator about upgrading your enterprise license."
@@ -5518,6 +5530,10 @@
     "id": "ent.ldap.do_login.user_not_registered.app_error",
     "translation": "User not registered on AD/LDAP server."
   },
+  {
+    "id": "ent.ldap.do_login.x509.app_error",
+    "translation": "Error creating key pair"
+  },
   {
     "id": "ent.ldap.save_user.email_exists.ldap_app_error",
     "translation": "This account does not use AD/LDAP authentication. Please sign in using email and password."