Exclude git operations from checkbuild in tox.

To test checkbuild in tox, git operations are unnecessary.
And this enables to run checkbuild in anywhere.

Change-Id: Ida41de8adba66096d3d5ede1d6a2f71af73fe142

hooks/post_gen_project.sh

@@ -1,5 +1,7 @@
 #!/usr/bin/env sh
 
-git init
-git add .
-git commit -a -m "Initial UI-Cookiecutter Commit."
+if ! [ ${IGNORE_GIT} ]; then
+    git init
+    git add .
+    git commit -a -m "Initial UI-Cookiecutter Commit."
+fi

tox.ini

@@ -16,6 +16,8 @@ deps =
 commands = {posargs}
 
 [testenv:checkbuild]
+setenv =
+  IGNORE_GIT=1
 commands =
   rm -rf {envdir}/cafe-ui
   cookiecutter --no-input --output-dir {envdir} {toxinidir}