SNOW-1935764: Fix account value in jenkins tests (#1014)

Author: sfc-gh-dprzybysz

system_test/connectionOptions.js

@@ -14,7 +14,7 @@ let snowflakeTestProxyPort = process.env.SNOWFLAKE_TEST_PROXY_PORT;
 const snowflakeTestProxyProtocol = process.env.SNOWFLAKE_TEST_PROXY_PROTOCOL;
 const snowflakeTestProxyUser = process.env.SNOWFLAKE_TEST_PROXY_USER;
 const snowflakeTestProxyPassword = process.env.SNOWFLAKE_TEST_PROXY_PASSWORD;
-const snowflakeTestAccount = process.env.SNOWFLAKE_TEST_ACCOUNT;
+let snowflakeTestAccount = process.env.SNOWFLAKE_TEST_ACCOUNT;
 const snowflakeTestUser = process.env.SNOWFLAKE_TEST_USER;
 const snowflakeTestDatabase = process.env.SNOWFLAKE_TEST_DATABASE;
 const snowflakeTestWarehouse = process.env.SNOWFLAKE_TEST_WAREHOUSE;
@@ -30,6 +30,10 @@ if (snowflakeTestHost === undefined) {
   snowflakeTestHost = snowflakeTestAccount + '.snowflakecomputing.com';
 }
 
+if (snowflakeTestHost.endsWith('reg.local')) {
+  snowflakeTestAccount = snowflakeTestHost.split('.')[0];
+}
+
 if (snowflakeTestPort === undefined) {
   snowflakeTestPort = '443';
 }