Gradle task ordering

[dmdashenkov]

In this PR we make the Gradle tasks declared by Model Compiler have more strict bounds to the task graph.

Previously, some tasks were only bound from one side, i.e. a task must have been executed after an existing one. This is insufficient, since, in some cases, such tasks might be moved in the task graph in such a way that their result it not captured by another task. For example, the task which generates a descriptor reference file (desc.ref) could've been executed after processResources, which would lead to the desc.ref file missing from the classpath at runtime.

In this PR we add more constraints to make sure that the tasks are ordered properly.

[codecov]

Codecov Report

Merging #562 into master will decrease coverage by 0.00%.
The diff coverage is 17.39%.

@@             Coverage Diff              @@
##             master     #562      +/-   ##
============================================
- Coverage     73.99%   73.98%   -0.01%     
- Complexity     2975     2977       +2     
============================================
  Files           506      506              
  Lines         12001    12008       +7     
  Branches        674      673       -1     
============================================
+ Hits           8880     8884       +4     
- Misses         2891     2894       +3     
  Partials        230      230              

[dmdashenkov]

@dmitrykuzmin, PTAL.

[dmitrykuzmin]

LGTM