add SSL_SELF_SIGNED to be configured for gitaly

add it to `gitlab_configure_gitaly()`

Author: kkimurak

assets/runtime/functions

@@ -253,7 +253,8 @@ gitlab_configure_gitaly() {
     GITLAB_LOG_DIR \
     GITLAB_REPOS_DIR \
     GITLAB_SHELL_INSTALL_DIR \
-    GITLAB_RELATIVE_URL_ROOT
+    GITLAB_RELATIVE_URL_ROOT \
+    SSL_SELF_SIGNED
 
   update_template ${GITLAB_CONFIG} \
     GITALY_CLIENT_PATH \
@@ -1883,7 +1884,6 @@ configure_gitlab_shell() {
     GITLAB_HOME \
     GITLAB_LOG_DIR \
     GITLAB_SHELL_INSTALL_DIR \
-    SSL_SELF_SIGNED \
     REDIS_HOST \
     REDIS_PORT \
     REDIS_DB_NUMBER