Retry updating remote tags when spot instance launches
Refactor tests
Delete an unused method
Add a condition which depends on label's value
[JENKINS-18855] Enable proxy for AWS API endpoint

Upgrading Jenkins to 1.447 LTS since `ProxyConfiguration#noProxyHost` was introduced in 1.443.
[FIXED JENKINS-18855] Enable proxy for SSH to EC2 instance

It uses HTTP proxy defined in Plugin configuration.
SOCKS proxy is not supported.
Fix a warning message
added timeout to ssh connect, this can sometimes block infinitely.
adding a timeout attempts a reconnect on timeout and continues in this case.
Merge pull request #85 from ikikko/retry-update-remote-tag

Retry updating remote tags when spot instance launches
Merge pull request #91 from borisnieuwenhuis/master

added timeout to ssh connect, this can sometimes block infinitely.
Merge pull request #90 from ohtake/18855-proxy

[JENKINS-18855] Support HTTP Proxy
Merge pull request #86 from ikikko/modify-condition-of-provisioning

Modify condition of provisioning
[maven-release-plugin] prepare release ec2-1.22
[maven-release-plugin] rollback the release of ec2-1.22
[maven-release-plugin] prepare release ec2-1.22
[maven-release-plugin] prepare for next development iteration
[FIXED JENKINS-23622] NPE - Reverse Proxy Authentication
[FIXES JENKINS-23629] NPE with ReentrantLock
Merge pull request #93 from bkmeneguello/null-proxy-config

[FIXED JENKINS-23622] NPE - Reverse Proxy Authentication
Merge pull request #94 from bkmeneguello/reentrant-lock

[FIXES JENKINS-23629] NPE with ReentrantLock