Optionally allow seconds in start_time and end_time

[martinvisser]

By allowing to define seconds for start_time and end_time the chance of scaling down to the default instance_min_count is reduced. Potential fix for https://github.com/cloudfoundry/app-autoscaler-release/issues/3356.

[linux-foundation-easycla[bot]]

The committers listed above are authorized under a signed CLA.

• :white_check_mark: login: martinvisser / name: Martin Visser (062d5fb2d57b4f189a76d77408f68cfa1cc8bbb7, 7421ec18524dff98119af46036d973acfa01fc17)

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[joergdw]

For current state, see: https://github.com/cloudfoundry/app-autoscaler-release/issues/3356#issuecomment-2674363688