fix enable_developer_preview for master branch

Change-Id: I3555a8b6c7bb1de6766a5813d487dec7faf33e39
Reviewed-on: http://review.couchbase.org/c/perfrunner/+/152514
Tested-by: Build Bot <[email protected]>
Reviewed-by: Bo-Chun Wang <[email protected]>

Author: bochun

perfrunner/helpers/cluster.py

@@ -825,5 +825,5 @@ def install_cb_debug_rpm(self):
     def enable_developer_preview(self):
         release, build_number = self.build.split('-')
         build = tuple(map(int, release.split('.'))) + (int(build_number),)
-        if build > (7, 0, 0, 4698) or build < (0, 0, 0, 9999):
+        if build > (7, 0, 0, 4698) or build < (1, 0, 0, 0):
             self.remote.enable_developer_preview()