change permission for build directory instead of _generated

compiler/Makefile

@@ -149,7 +149,6 @@ generate_code:
  @echo "Copying generated_base_structure to create directory structure"
  @echo "COMPILER_SRC_DIRECTORY: ${COMPILER_SRC_DIRECTORY}"
  cp -R _generated_base_structure _generated
- chmod -R 0775 _generated
  @echo "Copying go.mod file of datamodel"
  cp ${DATAMODEL_PATH}/go.mod _generated/go.mod
  sed -i'.bak' -e "1s|.*|module nexustempmodule|" _generated/go.mod
@@ -186,6 +185,7 @@ generate_code:
  @echo "Nexus Compiler: Moving files to output directory"
  cp -r _generated/{client,apis,crds,common,nexus-client,helper,nexus-gql} ${GENERATED_OUTPUT_DIRECTORY}
  cp -r ${GOPATH}/src/nexustempmodule/nexus-gql/graphql.so ${GENERATED_OUTPUT_DIRECTORY}/nexus-gql
+ chmod -R 0755 ${GENERATED_OUTPUT_DIRECTORY}
  mkdir -p ${GENERATED_OUTPUT_DIRECTORY}/install-validator
  cp -r ${GOPATH}/src/github.com/vmware-tanzu/graph-framework-for-microservices/install-validator/install.so ${GENERATED_OUTPUT_DIRECTORY}/install-validator/install.so || echo "Could not find install.so file, skipping"
  @echo "Nexus Compiler: Compiler code generation completed"