es9p_client: convert InitiateAuthenticationOkEsipa to match SGP.32 V.1.2
In SGP.32 V.1.0.1, InitiateAuthenticationOkEsipa is almost identical to SGP.22 InitiateAuthenticationOkEs9. However, in SGP.32 V.1.2, the member euiccCiPKIdToBeUsed is renamed to euiccCiPKIdentifierToBeUsed. This means it is no longer possible to pass InitiateAuthenticationOkEsipa as InitiateAuthenticationOkEs9 to ES9+ directly. Instead we have to re-build the the InitiateAuthenticationOkEs9 from the contents of InitiateAuthenticationOkEsipa.
esipa_asn1_handler: re-align to SGP.32 section 2.11.2 and section 5.14.6
Section 2.11.2: eIM package result (EuiccPackageResult case) is now concatenated with PendingNotificationList instead of RetrieveNotificationsListResponse Section 5.14.6: ESipa.ProvideEimPackageResult: Significant change in parameters
rest_api: move "required" member to the correct level
In some locations in the JSON schema files we find the "required" member on the same level as the members of "properties" (likewise "items"). This is incorrect, the "required" member should always be on the same level as the "properties" or "items" member.
(At the moment the JSON schema files serve only documentation purposes, they are not used to do any actual validation yet.)
