Monitoring fixes/improvements

[chris-j-h]

Fixes/changes for the InfluxDB and Prometheus metrics:

• MBean query was broken after server code refactors, this has been fixed
• It was difficult to distinguish between metrics from different app types. The AppType is now included in measurement names, e.g.tessera_P2P_GET_getPartyInfo
• Using the deprecated server config and including influxConfig only enabled monitoring for the P2P app. Both Q2T and P2P apps now record metrics to InfluxDB

[codecov-io]

Codecov Report

Merging #744 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #744      +/-   ##
============================================
+ Coverage     99.45%   99.45%   +<.01%     
  Complexity     1888     1888              
============================================
  Files           285      285              
  Lines          5639     5640       +1     
  Branches        282      282              
============================================
+ Hits           5608     5609       +1     
  Misses            5        5              
  Partials         26       26

Impacted Files	Coverage Δ	Complexity Δ
.../quorum/tessera/config/DeprecatedServerConfig.java	100% <100%> (ø)	19 <0> (ø)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 106884d...0d1f2f9. Read the comment docs.

[prd-fox]

Linked issue: #748