[core] Do not display environment var keys when their value is empty or blank #1913
Description
Task List
- Steps to reproduce provided
- Stacktrace (if present) provided
- Example that reproduces the problem (link to git repository is ideal)
- Full description of the issue provided (see below)
Steps to Reproduce
- Invoke
JRELEASER_FOO= jreleaser env
Expected Behaviour
The key JRELEASER_FOO should not be displayed.
Actual Behaviour
The key JRELEASER_FOO is displayed.
Environment Information
- Operating System: N/A
- JReleaser Version: 1.18.0
- JDK Version: N/A
Related to #1910