Fixed Coverity Issues reported

Signed-off-by: Santhosh Edukulla <santhosh.edukulla@gmail.com>
Fix NPE reported on IRC, provide the user an informative error message
CLOUDSTACK-7162:queryAsyncJobResult api does not return jobinstanceid.
CLOUDSTACK-7137: Resolving cleanup issue in test_escalations_securitygroups.py
CLOUDSTACK-7148: Adding missing list method
CLOUDSTACK-7044: Portable IP Range test case changes - reading portable ip range from test_data.py file
CLOUDSTACK-7147: Resolving test script issue in test_ip_reservation.py
CLOUDSTACK-6181: Allow RBD volumes to be resized

We don't need an external script to investigate the format of the RBD volume,
we only have to ask Libvirt to resize the volume and that will ask librbd to
do so.
CLOUDSTACK-6886 - Fixed the issue created by the SSL feature with the SDX:
CLOUDSTACK-7153: addNicToVirtualMachine not BaseAsyncCreate but creates an entity
CLOUDSTACK: Static IP address assignment for VM

Signed-off-by: sanjeev <sanjeev@apache.org>

Incorporated review comments for review request 23614
CLOUDSTACK-6823 : First code drop for Brocade Network plugin to orchestrate Brocade VDX switches for L2 connectivity

Signed-off-by: Hugo Trippaers <htrippaers@schubergphilis.com>
Add empty findbugs exclusion files for the new modules