Correctly handle old "liquibase tagExists myTag" style CLI structure

[nvoxland]

Description

fixes #2109

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Dev Handoff Notes (Internal Use)

Links

• Fixed Issue: liquibase tagExists command fails if --tag command argument is not used in v4.4.x #2109
• Test Results: https://github.com/liquibase/liquibase/pull/2269/checks

Testing

• Steps to Reproduce: liquibase tagExists command fails if --tag command argument is not used in v4.4.x #2109
• Guidance:
  • Impact: correctly converts the old style pattern into the new version before passing it along to the normal CLI logic. The rest of the code sees it as liquibase tag-exists --tag mytag

Dev Verification

Ran liquibase tagExists myTag against an h2 database and got "The tag 'myTag' does NOT exist in '@jdbc:h2:mem:liquibase'" as expected.

Test Requirements (Liquibase Internal QA)

Setup

Execute an update command with attached changelog file

• liquibase update --changelog-file lb2192-changelog.xml
• Verify that update was executed successfully

Execute tag command

• liquibase tag create
• Verify that tag create was successfully assigned to last row in DATABASECHANGELOG table

Manual Tests

Verify that new CLI command tag-exists --tag works correctly when specified tag is present.

• liquibase tag-exists --tag create
• The tag 'create' already exists in <your database> message is shown

Verify that new CLI command tag-exists --tag works correctly when specified tag is not present.

• liquibase tag-exists --tag mytag
• The tag 'mytag' does NOT exist in <your database> message is shown

Verify that new CLI command tag-exists works correctly when specified tag is present.

• liquibase tag-exists create
• The tag 'create' already exists in <your database> message is shown

Verify that new CLI command tag-exists works correctly when specified tag is not present.

• liquibase tag-exists mytag
• The tag 'mytag' does NOT exist in <your database> message is shown

Verify that old CLI command tagExists works correctly when specified tag is present.

• liquibase tagExists create
• The tag 'create' already exists in <your database> message is shown

Verify that old CLI command tagExists works correctly when specified tag is not present.

• liquibase tagExists mytag
• The tag 'mytag' does NOT exist in <your database> message is shown

Automated Tests

No new functional tests required for this fix.

┆Issue is synchronized with this Jira Bug by Unito