Fix and refactor query across anchors (CPS-1664 #3)

- Fix CPS-1580: Query Across All Anchors Does NOT Filter on Dataspace
- Fix CPS-1582: NullPointerException in queryDataNodesAcrossAnchors
- Improve performance of queryDataNodesAcrossAnchors
- Refactor queryDataNodes
- Refactor FragmentQueryBuilder

Issue-ID: CPS-1580
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I8b83d4c580280d8719ab2ac33f3914f53e798774
10 files changed