Improved handling of BMC attribute values by consulting registry type definitions

[atd9876]

Which component is affected?
BMCSettings

Describe the bug
BMC controller fails to apply Integer-type attributes because it doesn't convert string values to integers before sending them to iDRAC.

What Happens:
CRD Schema: BMCSettings uses map[string]string - all values must be strings

Dell Registry: Dell ManagerAttributeRegistry defines ADGroup.X.Privilege as type Integer

Controller Behavior: SetBMCAttributesImmediately() (line 335) copies string values directly to PATCH payload without checking attribute types or converting

Validation Failure: CheckBMCAttributes() validates types and rejects strings for Integer attributes:

Impact:
Critical - Blocks configuration of all Integer-type Dell iDRAC attributes including:

ADGroup.X.Privilege (0-511 for AD group permissions)
ActiveDirectory.1.AuthTimeout
NTP, SysLog timeout values
Any other Integer-type attributes in Dell registry
Note: Only affects settings that are changing - if the value already matches current iDRAC state, no PATCH is sent and no error occurs.

[coderabbitai]

🔗 Related PRs

#834 - Override some of the default redfish attribute for dell registry stru… [merged]
#844 - Fix dell fetch BMC attribute method [merged]

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