Fix Helm Release Timeout Issue

[mohamed-rafraf]

What this PR does / why we need it:

Fix HelmRelease.WaitTimeout parsing issue (it does not support human-readable format). This PR Use metav1.Duration Instead of time.Duration type

Which issue(s) this PR fixes:

Fixes #3239

What type of PR is this?

Special notes for your reviewer:

Does this PR introduce a user-facing change? Then add your Release Note here:

Change the API type of the `.helmReleases[*].timeout` field to `k8s.io/apimachinery/pkg/apis/meta/v1.Duration` to match other Duration fields in the API and to allow specifying human-readable duration (e.g. `2m0s`)

Documentation:

NONE

[mohamed-rafraf]

/assign
/cc @xmudrii @kron4eg

[kron4eg]

/approve
/lgtm

[kubermatic-bot]

LGTM label has been added.

Git tree hash: 886666d72b62ced17ecf056642015f4b6549fc8a

[xmudrii]

/hold
for #3234 to get merged first

[xmudrii]

/hold cancel
/kind bug api-change

[xmudrii]

/lgtm
/approve

[kubermatic-bot]

LGTM label has been added.

Git tree hash: ca27fe7e776e5e0347350b4d626b055582d061e9

[kubermatic-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kron4eg, xmudrii

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[xmudrii]

/release-note-edit

Change the API type of the `.helmReleases[*].timeout` field to `k8s.io/apimachinery/pkg/apis/meta/v1.Duration` to match other Duration fields in the API and to allow specifying human-readable duration (e.g. `2m0s`)

[mohamed-rafraf]

/retest