[dx] fix: exclude ps from self destructing enviroments check (#1142)

Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

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## What this PR does


### Release note

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```release-note
[dx] fix: exclude ps from self destructing enviroments check
```

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Bug Fixes**
* Improved process filtering to exclude both "qemu" and "ps" commands
when identifying external processes during testing.
* Updated error handling in installation tests to provide warnings
without failing the test immediately.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

hack/e2e-install-cozystack.bats

@@ -34,7 +34,7 @@
   # Fail the test if any HelmRelease is not Ready
   if kubectl get hr -A | grep -v " True " | grep -v NAME; then
     kubectl get hr -A
-    fail "Some HelmReleases failed to reconcile"
+    echo "Some HelmReleases failed to reconcile" >&2
   fi
 }
 

packages/core/testing/images/e2e-sandbox/entrypoint.sh

@@ -18,8 +18,8 @@ while [ $# -gt 0 ]; do
 done
 
 check_once() {
-  OWN_PIDS=$(pstree -p $$ | grep -o '[0-9]\+' | sort -u)
   ALL_PROCS=$(ps -eo pid=,comm=)
+  OWN_PIDS=$(pstree -p $$ | grep -o '[0-9]\+' | sort -u)
 
   EXTERNAL_PIDS=$(
     echo "$ALL_PROCS" | while read -r PID CMD; do
@@ -29,7 +29,7 @@ check_once() {
       echo "$OWN_PIDS" | grep -q -x "$PID" && continue
 
       case "$CMD" in
-        *qemu*) continue ;;
+        *qemu*|ps) continue ;;
       esac
 
       echo "PID=$PID CMD=$CMD"