travis: install libssh2

Install libssh2 to increase test coverage (SFTP, SCP)

diff --git a/.travis.yml b/.travis.yml
index 3ce7d53edb2cb0d2c6d26c00164a1f418a2bcddc..8d296cb160965cb0a664af0c8efd9b133d1dcc06 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,7 @@ addons:
             - g++-4.8
             - libstdc++-4.8-dev
             - stunnel4
+            - libssh2-1-dev
 
 matrix:
     include: