Add project and instance fields to rcc job log

[ljwoodley]

Closes issue #159.

Here's the alter table statement to update rcc_job_log

ALTER TABLE `rcc_job_log`
ADD COLUMN `project` VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL AFTER `log_date`,
ADD COLUMN `instance` VARCHAR(128) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT NULL AFTER `project`;

ALTER TABLE `rcc_job_log`
ADD INDEX `project` (`project`),
ADD INDEX `instance` (`instance`);

note there was one unrelated error when testing the build. This will be resolved in another PR.

[saipavan10-git]

The changes look good. Reviewed and tested the new features using a script with init_etl() function. The log database now includes the project name and instance details

[pbchase]

This looks good the documentation and templates need a little updating, but the functionality is great. The code is robust in sloppy deployments.