Fixing Liquibase template for DB2

[twerthi]

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Background

As of Liquibase 5.0, the Community version no longer includes database drivers and users have to manage it themselves. The original code path of this template had an entry for DB2, but fell through as it was relying on the embedded DB2 driver.

Results

The code has been updated to dynamically download the DB2 .jar driver when the Download driver box is checked in the template.

Before

Executions against DB2 would fail if the user was using the Community variant of the Liquibase product.

After

The code has been updated to download the DB2 .jar database driver file if the Download driver option is checked in the template.

Pre-requisites

• Id should be a GUID that is not 00000000-0000-0000-0000-000000000000
  • NOTE If you are modifying an existing step template, please make sure that you do not modify the Id property (updating the Id will break the Library sync functionality in Octopus).
• Version should be incremented, otherwise the integration with Octopus won't update the step template correctly
• $Meta must have ExportedAt and OctopusVersion updated
• Parameter names should not start with $
• Step template parameter names (the ones declared in the JSON, not the script body) should be prefixed with a namespace so that they are less likely to clash with other user-defined variables in Octopus (see this issue). For example, use an abbreviated name of the step template or the category of the step template).
• LastModifiedBy field must be present, and (optionally) updated with the correct author
• The best practices documented here have been applied
• If a new Category has been created:
  • An image with the name {categoryname}.png must be present under the step-templates/logos folder
  • The switch in the humanize function in gulpfile.babel.js must have a case statement corresponding to it

[github-actions]

Review this PR in Hyponome for a side-by-side diff of the step-template JSON and any embedded scripts.

[lrochette]

I would change line 651 of the script from:

# Use built-in driver

to

# Downlaad DB2 driver

but looks good besides that