Add UNIT_TEST_GERRIT_SITE to .gitignore

Change-Id: I150aef9a0b88e8409923e18215f4e9f053816f65

.gitignore

diff --git a/.gitignore b/.gitignore
index f2cb839..1125f5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,4 @@
 *.swp
 *.asc
 /bin/
+/UNIT_TEST_GERRIT_SITE