OIDC property specific functions are used to handle generic Service Provider properties

[ivantha]

Description:
Currently, the IDN_OIDC_PROPERTY table is used to persist the OIDC specific properties of a service provider app. However, this table can (and is) used to store the generic app configs as well. The existing OIDC specific functions can be used in dealing with those generic configs as well. But the namings suggest that these methods only cater to the OIDC properties. It would be better to change the names to a generic form in order to avoid any confusion.

Discussion:
#1351 (comment)

Related Issues:
#1351