Remove 1000 bashate failures by ignoring .git directory

Change-Id: I64f04bddf2d7fac1c6dd0a801b974501b24f3ac0
Partially-Implements: blueprint bashate-gate

tox.ini

@@ -18,7 +18,7 @@ deps = bashate
 whitelist_externals = bash
 # tox improperly interprets # and {1} in regex, so match on [[:punct:]]+
 commands =
-    bash -c "files=`egrep -rlI '^[[:punct:]]+!/(bin/|/usr/bin/env )(ba)?sh' .` && bashate $files"
+    bash -c "files=`egrep -rlI --exclude-dir .git '^[[:punct:]]+!/(bin/|/usr/bin/env )(ba)?sh' .` && bashate $files"
 
 [testenv:setupenv]
 whitelist_externals = bash