Add CSIT variables for Argon

bgpcep-csit-1node-userfeatures-all-argon is failing due to not being
able to find variables for argon -- add symlinks to repair that.

Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
Change-Id: I88dbf55e56dcc2ab0b0386530e9aad65221c9bfe

diff --git a/csit/variables/bgpclustering/argon b/csit/variables/bgpclustering/argon
new file mode 120000 (symlink)
index 0000000..121ca56
--- /dev/null
+++ b/csit/variables/bgpclustering/argon
@@ -0,0 +1 @@
+aluminium
\ No newline at end of file

diff --git a/csit/variables/pcepuser/argon b/csit/variables/pcepuser/argon
new file mode 120000 (symlink)
index 0000000..437071b
--- /dev/null
+++ b/csit/variables/pcepuser/argon
@@ -0,0 +1 @@
+chlorine
\ No newline at end of file

diff --git a/csit/variables/tcpmd5user/argon b/csit/variables/tcpmd5user/argon
new file mode 120000 (symlink)
index 0000000..121ca56
--- /dev/null
+++ b/csit/variables/tcpmd5user/argon
@@ -0,0 +1 @@
+aluminium
\ No newline at end of file