Description

Following the merge of PR #785, which introduced the stringutils.SplitList utility, this issue tracks the refactoring of existing experiment logic to utilize this new function.

Context

Currently, many experiments use strings.Split(val, ",") directly to parse comma-separated lists (e.g., TARGET_PODS, TARGET_NODES). This approach is fragile and prone to errors when dealing with:

• Empty strings (returning a slice of length 1 containing an empty string).
• Trailing commas.
• Inconsistent spacing.

This was originally highlighted in Issue #555.

Goal

Refactor the codebase to replace fragile inline splitting with the robust stringutils.SplitList utility.

Scope of Changes

The refactor will target comma-separated list parsing in the following areas:

• Chaos Libraries: chaoslib/litmus/... (e.g., Network Chaos, Node Drain, AWS/Azure/GCP experiments).
• Cloud Packages: pkg/cloud/... (Cloud provider status checks and helpers).
• Probes & Utilities: pkg/probe/... and pkg/utils/....

Acceptance Criteria

• All identified instances of strings.Split for comma-separated lists are replaced with stringutils.SplitList.
• Import paths are updated to include github.com/litmuschaos/litmus-go/pkg/utils/stringutils.
• go mod tidy is run to clean up dependencies.
• Existing tests pass.