UI: Hide cpuspeed for custom constrained offering

[ustcweizhou]

Description

For customer constrained offering, the cpu speed is fixed.
Therefore the 'CpuSpeed' field should be hidden for customer constrained offering when change vm offering on UI.
It is visible only for unconstrained offering.

This is regression issue of #3245

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)

Screenshots (if appropriate):

How Has This Been Tested?

[yadvr]

cc @shwstppr@DaanHoogland@andrijapanicsb

[shwstppr]

@ustcweizhou This is in vm deploy wizard?
I'm not able to reproduce any problem with 4.13 in UI.
CPU speed field is already hidden for Custom Constrained type offerings. Even after selecting an unconstrained offering then again selecting constrained offering. How to reproduce the problem?

[weizhouapache]

@ustcweizhou This is in vm deploy wizard?
I'm not able to reproduce any problem with 4.13 in UI.
CPU speed field is already hidden for Custom Constrained type offerings. Even after selecting an unconstrained offering then again selecting constrained offering. How to reproduce the problem?

@shwstppr as I mentioned in the description, this issue happens when change vm offering.

[yadvr]

Since this is a UI only change no smoketests are necessary. All new changes are in Primate now, legacy UI need not be maintained anymore.
LGTM, I'll merge on 4.13 and fwd merge on 4.14 and master.

[shwstppr]

LGTM based on code changes