Add sftp strict host key checking to DFC tests

Issue-ID: DCAEGEN2-2219
Signed-off-by: Remigiusz Janeczek <remigiusz.janeczek@nokia.com>
Change-Id: I77438c7215bc80c65080f7c773fb9401edef6e79
diff --git a/plans/dcaegen2-collectors-datafile/Functional-suite/testplan.txt b/plans/dcaegen2-collectors-datafile/Functional-suite/testplan.txt
index 30d7a2d..052ab7c 100755
--- a/plans/dcaegen2-collectors-datafile/Functional-suite/testplan.txt
+++ b/plans/dcaegen2-collectors-datafile/Functional-suite/testplan.txt
@@ -1,3 +1,4 @@
 # Test suites are relative paths under [integration/csit.git]/tests/.
 # Place the suites in run order.
 dcaegen2-collectors-datafile/testsuites/Functional-Single-File-suite
+dcaegen2-collectors-datafile/testsuites/Strict-Host-Checking-suite