Set default NUM_NODES and remove TESTS_FOR var

As e2e and dev env test have sperate pipeline there is no use for
TESTS_FOR variable. Also add default for CAPM3_VERSION and CAPI_VERSION
variable for clusterctl upgrade tests

Change-Id: Ie42714fea463c47101209cae78560e1ac5933391
Signed-off-by: Sunnatillo <sunnat.samadov@est.tech>
diff --git a/jjb/metal3/job_capm3_e2e_basic_tests.yml b/jjb/metal3/job_capm3_e2e_basic_tests.yml
index b078ec5..eb21a4c 100644
--- a/jjb/metal3/job_capm3_e2e_basic_tests.yml
+++ b/jjb/metal3/job_capm3_e2e_basic_tests.yml
@@ -83,9 +83,9 @@
         default: 4096
         description: 'RAM size of the target host.'
     - string:
-        name: TESTS_FOR
-        default: "e2e_tests"
-        description: 'Tests using the e2e framework.'
+        name: NUM_NODES
+        default: 2
+        description: 'Number of libvirt VMs.'
     - string:
         name: GINKGO_FOCUS
         default: "basic"