K8SPSMDB-1018: fix incorrect Bash quoting in ps-entry.sh script

[wpt1313]

CHANGE DESCRIPTION

Problem:
When a MongoDB image that contains numactl package is used, the pod fails with the error message: 'numactl --interleave=all': not found

Cause:
The entrypoint script for MongoDB container runs mongod command preceded with numactl --interleave=all if the previous test for numactl returns a success code. Since the variable containing this command is incorrectly quoted when added to the list of positional parameters, the script tries to execute the following command:

exec 'numactl --interleave=all' mongod (...rest of parameters)

which fails with the error message:

'numactl --interleave=all': not found

The error never happens if current Percona MongoDB images are used — as they are missing numactl package providing the mentioned command, so the script conditional check for that command always silently fails.

Solution:
The variable is changed to an array and then properly quoted — so that the command is correctly executed and the code does not trigger Shellcheck SC-2086 warning.

CHECKLIST

Jira

• Is the Jira ticket created and referenced properly?
• Does the Jira ticket have the proper statuses for documentation (Needs Doc) and QA (Needs QA)?
• Does the Jira ticket link to the proper milestone (Fix Version field)?

Tests

• Is an E2E test/test case added for the new feature/change?
• Are unit tests added where appropriate?
• Are OpenShift compare files changed for E2E tests (compare/*-oc.yml)?

Config/Logging/Testability

• Are all needed new/changed options added to default YAML files?
• Are the manifests (crd/bundle) regenerated if needed?
• Did we add proper logging messages for operator actions?
• Did we ensure compatibility with the previous version or cluster upgrade process?
• Does the change support oldest and newest supported MongoDB version?
• Does the change support oldest and newest supported Kubernetes version?

[CLAassistant]

All committers have signed the CLA.

[JNKPercona]

Test name	Status
arbiter	passed
balancer	passed
custom-replset-name	passed
cross-site-sharded	passed
data-at-rest-encryption	passed
data-sharded	passed
demand-backup	passed
demand-backup-eks-credentials	passed
demand-backup-physical	passed
demand-backup-physical-sharded	passed
demand-backup-sharded	passed
expose-sharded	passed
ignore-labels-annotations	passed
init-deploy	passed
finalizer	passed
limits	passed
liveness	passed
mongod-major-upgrade	passed
mongod-major-upgrade-sharded	passed
monitoring-2-0	passed
multi-cluster-service	passed
non-voting	passed
one-pod	passed
operator-self-healing-chaos	passed
pitr	passed
pitr-sharded	passed
pitr-physical	passed
recover-no-primary	passed
rs-shard-migration	passed
scaling	passed
scheduled-backup	passed
security-context	passed
self-healing-chaos	passed
service-per-pod	passed
serviceless-external-nodes	passed
smart-update	passed
split-horizon	passed
storage	passed
tls-issue-cert-manager	passed
upgrade	passed
upgrade-consistency	failure
upgrade-consistency-sharded	failure
upgrade-sharded	passed
users	passed
version-service	passed
We run 45 out of 45

commit: 7de05aa
image: perconalab/percona-server-mongodb-operator:PR-1382-7de05aae

[hors]

@wpt1313 thank you for contribution