Add command line option to keep test environment after the test, but not to reuse an existing

[tkilias]

Background

• Currently SLCT provides reuse, which means either reuse an existing or start a new one and keep it
• sometimes, you want to get new environment, but you want to inspect or reuse it afterwards

Dependencies:

• https://github.com/exasol/integration-test-docker-environment/issues/24

Acceptance criteria

• Add a command line option to keep the test environment after the test, but not to reuse an existing.

[ckunki]

Hello @tkilias: Could you please elaborate the following tickets and make clear differences and relationships, e.g. dependencies:

• https://github.com/exasol/script-languages-container-tool/issues/70
• https://github.com/exasol/integration-test-docker-environment/issues/109
• https://github.com/exasol/integration-test-docker-environment/issues/24
• https://github.com/exasol/integration-test-docker-environment/issues/200

[tkilias]

@ckunki I clarified this ticket a bit