Update test resources to use new Resource definitions

[andreamlin]

• use the new resource_definition annotation
• make Resource.name and ResourceSet.name be CamelCase
• expand all paths to include resource identifiers as wildcards, e.g. projects/{project} instead of projects/*
• use resource_references in the ResourceSet
• temporarily remove references to google.api.Project, which has been deleted in https://github.com/googleapis/api-common-protos/pull/20/files

[codecov-io]

Codecov Report

Merging #2415 into master will decrease coverage by <.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #2415      +/-   ##
============================================
- Coverage     86.72%   86.72%   -0.01%     
+ Complexity     5243     5242       -1     
============================================
  Files           458      458              
  Lines         20881    20870      -11     
  Branches       2252     2252              
============================================
- Hits          18110    18099      -11     
  Misses         1968     1968              
  Partials        803      803

Impacted Files	Coverage Δ	Complexity Δ
...api/codegen/transformer/java/JavaSurfaceNamer.java	91.8% <0%> (-0.45%)	53% <0%> (-1%)
...en/transformer/php/PhpGapicSurfaceTransformer.java	92.95% <0%> (-0.08%)	41% <0%> (ø)
.../transformer/py/PythonGapicSurfaceTransformer.java	98.29% <0%> (-0.01%)	43% <0%> (-1%)

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[andreamlin]

PTAL