Add csa as binary in .gitattributes

Issue-ID: INT-1572

Signed-off-by: mrichomme <morgan.richomme@orange.com>
Change-Id: If307c3028372fc729aa848ff8d2b4042442aa313
Signed-off-by: mrichomme <morgan.richomme@orange.com>
diff --git a/.gitattributes b/.gitattributes
index 3185c44..2eb6749 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -2,3 +2,4 @@
 *.png binary
 *.jpg binary
 *.xlsx binary
+*.csar -text