Support static IPv6 address

[Fred-sun]

SUMMARY

Update azure_rm_publicipaddress model, fixes #110 .

ISSUE TYPE

• Bugfix Pull Request

COMPONENT NAME

azure_rm_publicipaddress

ADDITIONAL INFORMATION

[aardbol]

Your modification is wrong. This fixes the SKU issue:
public_ip_allocation_method=self.allocation_method if self.sku == 'Basic' else 'Static',

This is due to the Standard SKU only supported the Static allocation method for both IPv4 and IPv6.

Also, please don't forget to add this to the allocation_method description documentation:
- Is always Static when Standard SKU is used

[Fred-sun]

Your modification is wrong. This fixes the SKU issue:
public_ip_allocation_method=self.allocation_method if self.sku == 'Basic' else 'Static',

This is due to the Standard SKU only supported the Static allocation method for both IPv4 and IPv6.

Also, please don't forget to add this to the allocation_method description documentation:
- Is always Static when Standard SKU is used

@aardbol Thank you for your suggestion. I don't think there is any need to add judgments. What kind of parameter configuration should be used instead in the document. Thank you!