Use environemnt variable for tuxSuite

To ensure jenkins jobs can run on both OpenCI
and Arm CI, replace harcoded variables with
enironment variable.

These are system-wide environment variable and
are configured in:
Manage Jenkins > System > Global Properties

Change-Id: Icd8de032d02b08b1e9d45926ae063654a47bf72b
Signed-off-by: Saheer Babu <saheer.babu@arm.com>
diff --git a/jenkins/tuxsuite-setup.sh b/jenkins/tuxsuite-setup.sh
index d51ec30..9435810 100755
--- a/jenkins/tuxsuite-setup.sh
+++ b/jenkins/tuxsuite-setup.sh
@@ -11,6 +11,6 @@
 cat > ~/.config/tuxsuite/config.ini <<EOF
 [default]
 token=$TUXSUITE_TOKEN
-group=tfc
-project=ci
+group=$TUXSUITE_GROUP
+project=$TUXSUITE_PROJECT
 EOF