Move networks to another repository (#970)

* add networks as a submodule

* add it to the build script

Author: baltzell

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "validation/advanced-tests/data"]
 	path = validation/advanced-tests/data
 	url = https://code.jlab.org/hallb/clas12/coatjava/advanced-tests
+[submodule "etc/nnet"]
+	path = etc/data/nnet
+	url = https://code.jlab.org/hallb/clas12/coatjava/networks

build-coatjava.sh

@@ -110,6 +110,7 @@ download () {
           cd $src_dir > /dev/null
           git lfs install
           git submodule update --init etc/data/magfield
+          git submodule update --init etc/data/nnet
           if $downloadData; then git submodule update --init validation/advanced-tests/data; fi
           cd - > /dev/null
         else