fix: disk timeout too low (#703)

# Description

Drastically raise disk timeout. Especially with wiping and encryption,
adding disks can become time consuming, and combined with bulk add
options like osd-match this will trigger timeouts.

## Type of change

Delete options that are not relevant.

- Bug fix (non-breaking change which fixes an issue)

## How has this been tested?

Existing tests

## Contributor checklist

Please check that you have:

- [x] self-reviewed the code in this PR

Signed-off-by: Peter Sabaini <peter.sabaini@canonical.com>

Author: sabaini

microceph/client/disks.go

@@ -14,9 +14,11 @@ import (
 	"github.com/canonical/microceph/microceph/api/types"
 )
 
+const diskAddTimeout = 900 * time.Second
+
 // AddDisk requests Ceph sets up a new OSD.
 func AddDisk(ctx context.Context, c *microCli.Client, data *types.DisksPost) (types.DiskAddResponse, error) {
-	queryCtx, cancel := context.WithTimeout(ctx, time.Second*120)
+	queryCtx, cancel := context.WithTimeout(ctx, diskAddTimeout)
 	defer cancel()
 
 	errors := types.DiskAddResponse{}