update bundle gem version.

mysql2 v0.3.12 gem seems to be yanked. we updates v0.3.14 or later.
mussel,test: first natbox acceptance test.
mussel,test: add more instance/network_vif/external-ip lifecycle smoke testing.
dcmgr: fix missing timestamp entries for instance response.
Merge pull request #324 from axsh/external-ip-testing

External ip testing
Merge pull request #322 from axsh/fix-instance-response

dcmgr: fix missing timestamp entries for instance response.
Merge pull request #321 from axsh/bundle-update

update bundle gem version.
Add zabbix driver public_zabbix.
Merge pull request #326 from axsh/feature-zabbix

Add zabbix driver public_zabbix.
Added example. (should be fix my English...)
Update again.
vdc.sh: use rvm to interact with local private Rubies.
replace with rpm build meta package.
vdc.sh: disble SELinux.
vdc.sh: add yum-versionlock plugin.
Merge pull request #328 from axsh/vdcsh-use-rvm

Update vdc.sh to replace local Ruby build with RVM and RHEL6.4 compatibility.
Merge branch 'master' into feature-shared-vol
fix syntax break at merge.
hva: disable auto mount after OS reboot for iscsi volume.