sonar-scanner with -Dsonar.qualitygate.wait=true support

[kumbasar]

sonar-scanner is not printing the ANALYSIS SUCCESSFUL, you can browse line in the build log if -Dsonar.qualitygate.wait flag is set to true. Therefore, the plugin skips the SonarQube data part. By default this flag is false. The plugin works fine if this flag is unset or set to false. Also, see #129

Solution:
Instead of parsing this above string pattern, we can use below line to parse the SonarQube URL if -Dsonar.qualitygate.wait=true :

QUALITY GATE STATUS: PASSED - View details on https://**************

Also, the plugin will skip the waitForQualityGateTask method if -Dsonar.qualitygate.wait=true.

Tests

1. If -Dsonar.qualitygate.wait=true
   

2. If -Dsonar.qualitygate.wait=false
   

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[kumbasar]

@asimell are you fine with these changes? Or did I miss something?

[asimell]

@kumbasar I haven't had time to review these changes yet. I've had a busy week and I will try to have a look at this still this week.

[asimell]

LGTM

[kumbasar]

@asimell can you please give us a hint for the next release target?

[asimell]

@kumbasar Probably still this week. "Actual" work has kept me quite busy for a few weeks now. I can maybe squeeze it in today. The release creation doesn't actually really take that long, but I'm getting a bit paranoid with SonarQube generator changes, so I just want to test it well manually as well.