Install rsync to minion before fetch dump

Change-Id: Ie35cfa6b6f4205f67e6c9163d16de05f323776cc
diff --git a/tcp_tests/managers/underlay_ssh_manager.py b/tcp_tests/managers/underlay_ssh_manager.py
index cf1fb2b..5edebc7 100644
--- a/tcp_tests/managers/underlay_ssh_manager.py
+++ b/tcp_tests/managers/underlay_ssh_manager.py
@@ -509,6 +509,11 @@
             for minion in minions:
                 LOG.info("Getting archived artifacts from the minion {0}"
                          .format(minion))
+                master.check_call(
+                    "salt {minion} pkg.install rsync".format(
+                        minion=minion.strip()),
+                    raise_on_err=False,
+                    timeout=120)
                 master.check_call("rsync -aruv {0}:/root/*.tar.gz "
                                   "/root/dump/".format(minion.strip()),
                                   raise_on_err=False,