Fix typo in Pepper related changes

- Fix typo in changes which inforcing to use Pepper
  instead of direct http requests.

Change-Id: I34a689d8c89b68b8a5cfa77a96bdfb2a1132d7f6
Closes-Bug: PROD-15207
diff --git a/ceph-remove-osd.groovy b/ceph-remove-osd.groovy
index 63f5713..0963131 100644
--- a/ceph-remove-osd.groovy
+++ b/ceph-remove-osd.groovy
@@ -28,7 +28,7 @@
 node("python") {
 
     // create connection to salt master
-    python.setupPepperVirtualenv(venvPepper, SALT_MASTER_URL, SALT_MASTER_CREDENTIALS)
+    python.setupPepperVirtualenv(pepperEnv, SALT_MASTER_URL, SALT_MASTER_CREDENTIALS)
 
     if (flags.size() > 0) {
         stage('Set cluster flags') {