Fix enter/leave logging confusion

In a few places, misleading messages may confuse log readers, e.g.,
by indicating that a function is being entered when it is actually
being left.

Signed-off-by: Roger Luethi <roger.luethi@bisdn.de>
Change-Id: Ib8cc302574e6c49f2a0a60528b85d2310b31b8b5
diff --git a/vars/installVoltctl.groovy b/vars/installVoltctl.groovy
index fc983b4..5a0a55b 100644
--- a/vars/installVoltctl.groovy
+++ b/vars/installVoltctl.groovy
@@ -184,7 +184,7 @@
     voltctl version --clientonly
 """)
 
-    enter('process')
+    leave('process')
     return(ans)
 }