[POLICY] Use apex 2.4.4 and drools 1.7.5

Update version numbers for some Policy images.
Fixed the following issues:
- update default branch to guilin
- match prov-status with both "ACTIVE" and "active" in drools-apps
- close stdin & stdout in apex-pdp CLI editor
- add stringify method to apex-pdp execution context
- set dmaap fetch timeout for apex-pdp

Issue-ID: POLICY-2893
Change-Id: I30017d6f2f01034b2f8721c800925dcab79672b3
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/.gitreview b/.gitreview
index eabfdc6..97df296 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,4 +2,4 @@
 host=gerrit.onap.org
 port=29418
 project=oom
-defaultbranch=master
+defaultbranch=guilin