Update vCPE example for A&AI custom query

Update vCPE example for A&AI custom query

The change in policy-models to use custom queries means that the named
queries used in apex examples must be updated to use custom queries.
This review is the first of two reviews to implement this change. I
thcnages the A&AI simulator, which will allow the apex-pdp to build
again. A further change will bring in the policy changes to get the
example implementation fixed.

Issue-ID: POLICY-2125
Change-Id: I833c351b43995e648288cdf1c87c0abbe7a671cc
Signed-off-by: liamfallon <liam.fallon@est.tech>