eve: Rename multiple-nodes stage to multiple-nodes-centos

Rename `multiple-nodes` stage to `multiple-nodes-centos` to have the
same naming on all development branches to being able to add some
filtering on this stage like `simultaneous_build`.

eve/main.yml

@@ -336,7 +336,7 @@ stages:
           name: Trigger single-node and multiple-nodes steps with built ISO
           stage_names:
             - single-node
-            - multiple-nodes
+            - multiple-nodes-centos
       - ShellCommand: *add_final_status_artifact_success
       - Upload: *upload_final_status_artifact
 
@@ -518,7 +518,7 @@ stages:
           env:
             STEP_NAME: single-node
 
-  multiple-nodes:
+  multiple-nodes-centos:
     _metalk8s_internal_info:
       junit_info: &_install_multi-node_junit_info
         TEST_SUITE: install
@@ -535,7 +535,7 @@ stages:
           env:
             <<: *_env_final_status_artifact_failed
             <<: *_install_multi-node_junit_info
-            STEP_NAME: multiple-nodes
+            STEP_NAME: multiple-nodes-centos
       - ShellCommand: *setup_cache
       - ShellCommand: *ssh_ip_setup
       - ShellCommand: *retrieve_iso
@@ -748,13 +748,13 @@ stages:
           env:
             <<: *_env_final_status_artifact_success
             <<: *_install_multi-node_junit_info
-            STEP_NAME: multiple-nodes
+            STEP_NAME: multiple-nodes-centos
       - Upload: *upload_final_status_artifact
       - ShellCommand:
           <<: *wait_debug
           timeout: 14400
           env:
-            STEP_NAME: multiple-nodes
+            STEP_NAME: multiple-nodes-centos
             DURATION: "14400"
       - ShellCommand:
           name: Destroy openstack virtual infra