RCORE-1973 Add role/permissions tests for new bootstrap feature

[michael-wb]

What, How & Why?

Additional tests for the server initiated bootstraps; specifically for role change bootstraps:

• Verify user role changes to not restart unaffected user sessions
• Verify role change during bootstraps complete successfully

Fixes #7327

☑️ ToDos

• 📝 Changelog update
• 🚦 Tests (or not relevant)
• [ ] C-API, if public C++ API changed
• [ ] bindgen/spec.yml, if public C++ API changed

[coveralls-official]

Pull Request Test Coverage Report for Build michael.wilkersonbarker_1094

Details

• 157 of 157 (100.0%) changed or added relevant lines in 2 files are covered.
• 47 unchanged lines in 9 files lost coverage.
• Overall coverage increased (+0.3%) to 90.761%

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Files with Coverage Reduction	New Missed Lines	%
src/realm/sort_descriptor.cpp	1	94.06%
test/test_table.cpp	1	99.51%
src/realm/table_view.cpp	2	92.99%
src/realm/sync/noinst/server/server_history.cpp	3	63.51%
src/realm/table.cpp	3	90.08%
src/realm/bplustree.cpp	6	72.55%
src/realm/sync/noinst/client_impl_base.cpp	7	82.36%
src/realm/sync/noinst/server/server.cpp	7	73.89%
test/fuzz_group.cpp	17	55.02%

Totals
Change from base Build michael.wilkersonbarker_1088:	0.3%
Covered Lines:	212810
Relevant Lines:	234473

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💛 - Coveralls