ci: Use new names for custom kola steps

The old `fcos*` versions are deprecated now:
https://github.com/coreos/coreos-ci-lib/pull/111

.cci.jenkinsfile

@@ -41,7 +41,7 @@ stage("Build") {
 }
 
 // Build FCOS and run kola tests.
-// Both fcosKola and fcosKolaTestIso require 4G max. Add 512M for overhead.
+// Both kola and kolaTestIso require 4G max. Add 512M for overhead.
 cosaPod(runAsUser: 0, memory: "4608Mi", cpu: "4") {
   stage("Build FCOS") {
     checkout scm
@@ -63,6 +63,6 @@ cosaPod(runAsUser: 0, memory: "4608Mi", cpu: "4") {
 
     """)
   }
-  fcosKola(cosaDir: "${env.WORKSPACE}")
-  fcosKolaTestIso(cosaDir: "${env.WORKSPACE}", skipMetal4k: true, skipMultipath: true)
+  kola(cosaDir: "${env.WORKSPACE}")
+  kolaTestIso(cosaDir: "${env.WORKSPACE}", skipMetal4k: true, skipMultipath: true)
 }