Update GraphDef version to 515.
Update GraphDef version to 515.

PiperOrigin-RevId: 330170759
Change-Id: Ice7f7edfce48539d7c60f83b9200d97381e33d7c

frreiss/tensorflow-fred,karllessard/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,sarvex/tensorflow,davidzchen/tensorflow,davidzchen/tensorflow,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_saved_model,paolodedios/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-experimental_link_static_libraries_once,freedomtan/tensorflow,frreiss/tensorflow-fred,aldian/tensorflow,Intel-tensorflow/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,yongtang/tensorflow,aam-at/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,gautam1858/tensorflow,petewarden/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,aldian/tensorflow,karllessard/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,paolodedios/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,frreiss/tensorflow-fred,davidzchen/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,yongtang/tensorflow,aldian/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow,Intel-Corporation/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,cxxgtxy/tensorflow,frreiss/tensorflow-fred,petewarden/tensorflow,davidzchen/tensorflow,gautam1858/tensorflow,yongtang/tensorflow,paolodedios/tensorflow,gautam1858/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,annarev/tensorflow,gautam1858/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,freedomtan/tensorflow,karllessard/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow,cxxgtxy/tensorflow,sarvex/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,petewarden/tensorflow,sarvex/tensorflow,frreiss/tensorflow-fred,annarev/tensorflow,aam-at/tensorflow,petewarden/tensorflow,Intel-Corporation/tensorflow,Intel-Corporation/tensorflow,freedomtan/tensorflow,freedomtan/tensorflow,davidzchen/tensorflow,cxxgtxy/tensorflow,aam-at/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,karllessard/tensorflow,aam-at/tensorflow,paolodedios/tensorflow,Intel-Corporation/tensorflow,aldian/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,karllessard/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,annarev/tensorflow,yongtang/tensorflow,paolodedios/tensorflow,Intel-tensorflow/tensorflow,Intel-tensorflow/tensorflow,aam-at/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,cxxgtxy/tensorflow,annarev/tensorflow,Intel-Corporation/tensorflow,davidzchen/tensorflow,cxxgtxy/tensorflow,aam-at/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,yongtang/tensorflow,annarev/tensorflow,paolodedios/tensorflow,aldian/tensorflow,gautam1858/tensorflow,petewarden/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,paolodedios/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,davidzchen/tensorflow,gautam1858/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,aam-at/tensorflow,tensorflow/tensorflow,gautam1858/tensorflow,karllessard/tensorflow,yongtang/tensorflow,paolodedios/tensorflow,yongtang/tensorflow,freedomtan/tensorflow,sarvex/tensorflow,davidzchen/tensorflow,aam-at/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-pywrap_saved_model,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,freedomtan/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_tf_optimizer,karllessard/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,Intel-tensorflow/tensorflow,aldian/tensorflow,annarev/tensorflow,freedomtan/tensorflow,petewarden/tensorflow,sarvex/tensorflow,sarvex/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,frreiss/tensorflow-fred,annarev/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,karllessard/tensorflow,sarvex/tensorflow,frreiss/tensorflow-fred,karllessard/tensorflow,karllessard/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,frreiss/tensorflow-fred,annarev/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-experimental_link_static_libraries_once,aldian/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aam-at/tensorflow,freedomtan/tensorflow,annarev/tensorflow,aam-at/tensorflow,annarev/tensorflow,gautam1858/tensorflow,paolodedios/tensorflow,Intel-Corporation/tensorflow,frreiss/tensorflow-fred,karllessard/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,yongtang/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow,aldian/tensorflow,paolodedios/tensorflow,petewarden/tensorflow,cxxgtxy/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow,cxxgtxy/tensorflow,Intel-Corporation/tensorflow