Allow stopping build process in case of unable to communicate with Vault

[sugdyzhekov]

In many cases, it is useless to continue to build w/o some data from Vault.

[IainColledge]

Agree 100% passing the path to a secret isn't valuable, the process should abort.

[varsy]

Would you kindly do this since we're using your lovely plugin every day for production deployments and it's essential to stop the whole process when Vault doesn't work, please?

[ghost]

+1

[VladRassokhin]

I've added checkbox in Connection settings