Enable some previously disabled longer running tests

[chris-j-h]

• A few longer running tests were not included in our maven builds (all **IT.java tests are currently ignored in the gradle builds).
  No test is long enough to warrant not being included.
• Remove CoreIT test
• Un-exclude javax.inject dependencies from jersey-server pom. These were originally added due to collisions with grpc dependencies that have since been removed.

[codecov-io]

Codecov Report

Merging #974 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #974      +/-   ##
============================================
+ Coverage      99.3%   99.31%   +<.01%     
- Complexity     2173     2181       +8     
============================================
  Files           328      329       +1     
  Lines          5922     5951      +29     
  Branches        354      355       +1     
============================================
+ Hits           5881     5910      +29     
  Misses            5        5              
  Partials         36       36

Impacted Files	Coverage Δ	Complexity Δ
...n/java/com/quorum/tessera/config/ServerConfig.java	100% <100%> (ø)	26 <3> (+1)	⬆️
...um/tessera/config/util/IntervalPropertyHelper.java	100% <100%> (ø)	5 <5> (?)
...com/quorum/tessera/jaxrs/client/ClientFactory.java	100% <100%> (ø)	8 <3> (ø)	⬇️
...va/com/quorum/tessera/admin/ConfigServiceImpl.java	100% <100%> (ø)	10 <3> (+2)	⬆️

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