Trim port in stop scripts & data dir

[jt2594838]

The scripts of stopping data nodes and config nodes use port from the configuration file but do not trim it,
which may cause a failure of matching the port in config and the port of the node.

The same occurs when datanode-env.sh tries to make the dir for heap dump.

[sonarqubecloud]

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 39.35%. Comparing base (385d0df) to head (4abcda9).
Report is 12 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #15134   +/-   ##
=========================================
  Coverage     39.34%   39.35%           
  Complexity      193      193           
=========================================
  Files          4596     4598    +2     
  Lines        295791   295864   +73     
  Branches      36872    36884   +12     
=========================================
+ Hits         116384   116428   +44     
- Misses       179407   179436   +29     

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