ci+tests: don't use deprecated ndnsec commands

Change-Id: I3e63b7d6bac34b27729c2bd1e5bf2d2073840249
diff --git a/.jenkins.d/20-tests.sh b/.jenkins.d/20-tests.sh
index fb5d2dc..a752c72 100755
--- a/.jenkins.d/20-tests.sh
+++ b/.jenkins.d/20-tests.sh
@@ -8,7 +8,7 @@
     security unlock-keychain -p named-data
 fi
 
-ndnsec-keygen "/tmp/jenkins/$NODE_NAME" | ndnsec-install-cert -
+ndnsec key-gen "/tmp/jenkins/$NODE_NAME" | ndnsec cert-install -
 
 # https://github.com/google/sanitizers/wiki/AddressSanitizerFlags
 ASAN_OPTIONS="color=always"