Jakub Sokołowski 44ed858363
ci: fix Xvfb conflicts due to parallel builds
By default these settings are disable:
```java
    /** Let Xvfb pick display number */
    private boolean autoDisplayName = false;
```
https://github.com/jenkinsci/xvfb-plugin/blob/88cb84e0/src/main/java/org/jenkinsci/plugins/xvfb/Xvfb.java#L434-L435
```java
    /** Run on same node in parallel */
    private boolean parallelBuild = false;
```
https://github.com/jenkinsci/xvfb-plugin/blob/88cb84e0/src/main/java/org/jenkinsci/plugins/xvfb/Xvfb.java#L440-L441

Which means that this code doesn't have an effect by default:
```java
        final int executorNumber= executor.getNumber();

        if (parallelBuild) {
            final Computer[] computers = Jenkins.get().getComputers();
            final int nodeIndex = Arrays.binarySearch(computers, currentComputer, ComputerNameComparator.INSTANCE);

            return nodeIndex * 100 + executorNumber + displayNameOffset;
        }
        else {
            return executorNumber + displayNameOffset;
        }
```
https://github.com/jenkinsci/xvfb-plugin/blob/88cb84e0/src/main/java/org/jenkinsci/plugins/xvfb/Xvfb.java#L637-L647

And causes errors like this:
```
$ /usr/bin/Xvfb :0 -screen 0 1024x768x24 -fbdir /home/jenkins/workspace/desktop_branches_uitests_PR-6952/.xvfb-3-..fbdir7194278924155710961
Xvfb starting(EE)
Fatal server error:
(EE) Server is already active for display 0
```

Signed-off-by: Jakub Sokołowski <jakub@status.im>
2022-08-10 18:42:17 +02:00
2022-07-07 08:55:05 -04:00
2022-08-08 20:42:56 -04:00
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2022-07-14 22:04:33 +02:00
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2020-06-08 13:07:25 -04:00
2022-06-30 12:11:24 -04:00
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