Replace truststore password with a generated password.

[mshima]

Overview of the issue

See https://sonarcloud.io/project/issues?impactSoftwareQualities=SECURITY&issueStatuses=OPEN%2CCONFIRMED&id=jhipster-sample-application&open=AY-bGbmy0r5EG8xkTIvB

Motivation for or Use Case

Fix sonar issue and improve security of out of box application.

Reproduce the error

Related issues

Suggest a Fix

Generate a random password like jwtSecretKey or use base name as password.

• Checking this box is mandatory (this is just to show you read everything)

[Shaanworkspace]

I'd like to work on this, is it available?

[siva-sai-udaygiri]

Hi, I would like to work on this issue.

[Shaanworkspace]

Is it Fixed ?