Add tool to track migration to neutron-lib

Add a tool that tracks how far off a subproject is from breaking
the dependency from neutron.

Something fun to help us ease the pain. An example output is like
the one below:

You have 229 total imports
You imported Neutron 78 times
You imported Neutron-Lib 10 times
You need to get to 100%, you are this far: 11.3600%, get on with it!

Change-Id: I1a1d89a2628587e95e339524e5593191a27fe5bf

tools/migration_report.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+function count_imports() {
+    local module="$1"
+    local path="$2"
+    egrep -R -w "^(import|from) $module" --exclude-dir=".*tox" $your_project  | wc -l
+}
+
+
+if [ $# -eq 0 ]; then
+    echo "Please specify path to your project."
+    exit 1
+else
+    your_project="$1"
+fi
+
+total_imports=$(egrep -R -w "^(import|from)" --exclude-dir=".*tox" $your_project  | wc -l)
+neutron_imports=$(count_imports neutron $your_project)
+lib_imports=$(count_imports neutron_lib $your_project)
+total_neutron_related_imports=$((neutron_imports + lib_imports))
+
+echo "You have $total_imports total imports"
+echo "You imported Neutron $neutron_imports times"
+echo "You imported Neutron-Lib $lib_imports times"
+
+if [ "$lib_imports" -eq 0 ]; then
+    echo "Your project does not import neutron-lib once, you suck!"
+fi
+
+goal=$(bc -l <<< "scale=4; ($lib_imports/$total_neutron_related_imports*100)")
+target=$(bc <<< "$goal>50")
+
+if [ "$target" -eq 0 ]; then
+    echo "You need to get to 100%, you are this far: $goal%, get on with it!"
+else
+    echo "You need to get to 100%, you are close: $goal%, good job!"
+fi