bump up cell timeouts; use more descriptiove cell name

Change-Id: I41e612cbd9af27741cbabf4711e5571484a370b4
diff --git a/jjb/onos/onos-run-bazel-stc-hag.sh b/jjb/onos/onos-run-bazel-stc-hag.sh
index 6b07d13..6826bc6 100644
--- a/jjb/onos/onos-run-bazel-stc-hag.sh
+++ b/jjb/onos/onos-run-bazel-stc-hag.sh
@@ -15,13 +15,13 @@
 
 # always free the cell when exiting
 function cleanup {
-  cell return jenkins-${ONOS_VERSION}
+  cell return ${BUILD_TAG}
 }
 
 trap cleanup EXIT
 
 # grab a cell to run on
-cell borrow 30 3+1 jenkins-${ONOS_VERSION}
+cell borrow 60 3+1 ${BUILD_TAG}
 
 # build onos bits
 bazel build onos