Fixed 404 error when deleting disk from VM.

[bond95]

Fixes: #543

---

This change is 

[jniederm]

code LGTM

---

please add short description to commit message. git log doesn't integrate well with github.

[bond95]

@jniederm Done.

[mareklibra]

@bond95 , thanks for the patch and commit message. The fix LGTM.

Anyway, it would be great if you can explain more deeply (in the commit message) the flow leading to 404 and the reason why canBeMissing=true is the proper fix.
It's clear now, but good commit message might help in the future when making related changes.

[bond95]

@mareklibra Done.

[sjd78]

@bond95 Looks like your change really just tells the disk fetch to ignore fails. I think error is probably a timing issue. Remove the disk ... something asks for its details in future and gets a 404 since it has already been removed.

Take a look at src/components/VmDisks/sagas.js. The removeDisk() function kinda does that on purpose.

EDIT - Oops. That's what you fixed! Too many windows and tabs open at once today.

I suggest a commit description along the lines of, "The removeDisk() function polls the deleted disk and once the 404 is received it refreshes the disk list. The 404 is an expected response and no error needs to be handled and logged."