Add pike symlink to ocata

Link pike config to ocata folder to be able install Pike version
by this formula.

Related-Prod: PROD-15582
Change-Id: I097d299e01715bb1cbbb98dcf3781b3ffc60a03a
diff --git a/ceilometer/files/pike b/ceilometer/files/pike
new file mode 120000
index 0000000..d5e8ce2
--- /dev/null
+++ b/ceilometer/files/pike
@@ -0,0 +1 @@
+ocata
\ No newline at end of file