feat(adminconsle): support for HostCABundlePath template function

[emosbaugh]

What this PR does / why we need it:

In addition to the existing PrivateCACert template function which exposes the CA in a ConfigMap, another template function HostCABundlePath will be added so that vendors can mount the cert directly as a hostPath volume and receive realtime updates.

This adds an environment variable in the kotsadm container via extraEnv in the values file HOST_CA_BUNDLE_PATH so that kots can know the path to the CA bundle on the host.

Related:

• feat(ec): support for HostCABundlePath template function kots#5337
• feat(ec): support for HostCABundlePath template function replicated-docs#3274

Which issue(s) this PR fixes:

Does this PR require a test?

Does this PR require a release note?

Does this PR require documentation?

[github-actions]

This PR has been released (on staging) and is available for download with a embedded-cluster-smoke-test-staging-app license ID.

Online Installer:

curl "https://staging.replicated.app/embedded/embedded-cluster-smoke-test-staging-app/ci/appver-dev-a2fca1b" -H "Authorization: $EC_SMOKE_TEST_LICENSE_ID" -o embedded-cluster-smoke-test-staging-app-ci.tgz

Airgap Installer (may take a few minutes before the airgap bundle is built):

curl "https://staging.replicated.app/embedded/embedded-cluster-smoke-test-staging-app/ci-airgap/appver-dev-a2fca1b?airgap=true" -H "Authorization: $EC_SMOKE_TEST_LICENSE_ID" -o embedded-cluster-smoke-test-staging-app-ci.tgz

Happy debugging!