fix(agent): add mount for host's /run vol for all deployment types

[aroberts87]

What this PR does / why we need it:

When installing on GKE Autopilot clusters with the agent slim mode selected the host's /run volume was not being mounted into the agent container. This was preventing the correct retrieval of container metrics.

Since the problematic scenario was the only case where the host's /run volume was not being mounted into the agent container, that volume has now been elevated to the "always requested" section.

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• Title of the PR starts with type and scope, (e.g. feat(agent,node-analyzer,sysdig-deploy):)
• Chart Version bumped for the respective charts
• Variables are documented in the README.md (or README.tpl in some charts)
• Check GithubAction checks (like lint) to avoid merge-check stoppers
• All test files are added in the tests folder of their respective chart and have a "_test" suffix

Check Contribution guidelines in README.md for more insight.

[mavimo]

We manually tested and now work as expected.