Jenkinsfile: avoid errors from find

There are many errors like this one:

> 01:39:28.750 find: ‘bundles/test-integration/dbc77018d39a5/root/overlay2/f49953a883daceee60a481dd8e1e37b0f806d309258197d6ba0f6871236d3d47/work/work’: Permission denied

(probably caused by bad permissions)

These directories are not to be looked at when we search for logs, so
let's exclude them. It's not super easy to do in find, here is some
kind of an explanation for find arguments

```
PATTERN ACTION OR PATTERN                           ACTION
-path X -prune -o -type f [AND] (-name A -o name B) -print
```

(here -o means OR, while AND is implicit)

While at it,
 - let the find know we're only looking for files, not directories
 - remove a subshell and || true
 - remove `-name integration.test` (there are no such files)

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

Jenkinsfile

@@ -210,7 +210,8 @@ pipeline {
 
                             sh '''
                             echo "Creating janky-bundles.tar.gz"
-                            (find bundles -name '*.log' -o -name '*.prof' -o -name integration.test | xargs tar -czf janky-bundles.tar.gz) || true
+                            # exclude overlay2 directories
+                            find bundles -path '*/root/*overlay2' -prune -o -type f \\( -name '*.log' -o -name '*.prof' \\) -print | xargs tar -czf janky-bundles.tar.gz
                             '''
 
                             archiveArtifacts artifacts: 'janky-bundles.tar.gz'
@@ -295,8 +296,9 @@ pipeline {
                             '''
 
                             sh '''
-                            echo "Creating bundles.tar.gz"
-                            find bundles -name '*.log' | xargs tar -czf s390x-bundles.tar.gz
+                            echo "Creating s390x-bundles.tar.gz"
+                            # exclude overlay2 directories
+                            find bundles -path '*/root/*overlay2' -prune -o -type f \\( -name '*.log' -o -name '*.prof' \\) -print | xargs tar -czf s390x-bundles.tar.gz
                             '''
 
                             archiveArtifacts artifacts: 's390x-bundles.tar.gz'
@@ -379,8 +381,9 @@ pipeline {
                             '''
 
                             sh '''
-                            echo "Creating bundles.tar.gz"
-                            find bundles -name '*.log' | xargs tar -czf powerpc-bundles.tar.gz
+                            echo "Creating powerpc-bundles.tar.gz"
+                            # exclude overlay2 directories
+                            find bundles -path '*/root/*overlay2' -prune -o -type f \\( -name '*.log' -o -name '*.prof' \\) -print | xargs tar -czf powerpc-bundles.tar.gz
                             '''
 
                             archiveArtifacts artifacts: 'powerpc-bundles.tar.gz'