brew: set CPATH if tbb@2020 is a dependency

See discussion in the following issue:
osrf/homebrew-simulation#1477

This was needed by the gazebo11 test in
osrf/homebrew-simulation#1479

Signed-off-by: Steve Peters <scpeters@openrobotics.org>

jenkins-scripts/lib/project-default-devel-homebrew-amd64.bash

@@ -114,6 +114,10 @@ export DISPLAY=$(ps ax \
 if brew ruby -e "exit ! '${PROJECT_FORMULA}'.f.recursive_dependencies.map(&:name).keep_if { |d| d == 'qt@5' }.empty?"; then
   export CMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}:/usr/local/opt/qt@5
 fi
+# Workaround for tbb@2020: set CPATH
+if brew ruby -e "exit ! '${PROJECT_FORMULA}'.f.recursive_dependencies.map(&:name).keep_if { |d| d == 'tbb@2020' }.empty?"; then
+  export CPATH=${CPATH}:/usr/local/opt/tbb@2020/include
+fi
 # Workaround for tinyxml2 6.2.0: set CMAKE_PREFIX_PATH and PKG_CONFIG_PATH if we are using tinyxml2@6.2.0
 if brew ruby -e "exit ! '${PROJECT_FORMULA}'.f.recursive_dependencies.map(&:name).keep_if { |d| d == 'tinyxml2@6.2.0' }.empty?"; then
   export CMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}:/usr/local/opt/tinyxml2@6.2.0