Removes secondaryParam and hasMore

[spacether]

This PR removes the properties

• secondaryParam
• hasMore

because these parameters are booleans that are used to control rendering in mustache templates
We can remove these because mustache already has #-first and #-last and ^-first and ^-last tags

• #secondaryParam -> ^-first
• ^secondaryParam -> -first
• #hasMore -> ^last
• ^hasMore -> -last

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[wing328]

Looks like somes tests need to be updated accordingly as well:

[ERROR] COMPILATION ERROR : 
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2590,14] cannot find symbol
  symbol:   variable hasMore
  location: variable propA of type org.openapitools.codegen.CodegenProperty
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2593,14] cannot find symbol
  symbol:   variable hasMore
  location: variable propB of type org.openapitools.codegen.CodegenProperty
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2596,14] cannot find symbol
  symbol:   variable hasMore
  location: variable propC of type org.openapitools.codegen.CodegenProperty
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2599,22] cannot find symbol
  symbol:   variable hasMore
  location: variable propBRequired of type org.openapitools.codegen.CodegenProperty
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:testCompile (default-testCompile) on project openapi-generator: Compilation failure: Compilation failure: 
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2590,14] cannot find symbol
[ERROR]   symbol:   variable hasMore
[ERROR]   location: variable propA of type org.openapitools.codegen.CodegenProperty
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2593,14] cannot find symbol
[ERROR]   symbol:   variable hasMore
[ERROR]   location: variable propB of type org.openapitools.codegen.CodegenProperty
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2596,14] cannot find symbol
[ERROR]   symbol:   variable hasMore
[ERROR]   location: variable propC of type org.openapitools.codegen.CodegenProperty
[ERROR] /home/travis/build/OpenAPITools/openapi-generator/modules/openapi-generator/src/test/java/org/openapitools/codegen/DefaultCodegenTest.java:[2599,22] cannot find symbol
[ERROR]   symbol:   variable hasMore
[ERROR]   location: variable propBRequired of type org.openapitools.codegen.CodegenProperty
[ERROR] -> [Help 1]

[wing328]

cc @OpenAPITools/generator-core-team as well

[spacether]

Looks like some tests need to be updated accordingly as well:
@wing328 thank you; all tests are now passing

[wing328]

FYI. Some comments still are still referencing hasMore in OneOfImplementorAdditionalData.java and we can revise those later as these comments do not impact the functionality of the code.

[wing328]

LGTM