Keycloak Plugin

Merge pull request #27 from UKHomeOffice/KeyCloakPlugin

adding keycloak plugin

Upgrade to Jenkins 2.61

updates to Java, docker and kubectl, drone pipeline added

Jenkins 2.30 with kubectl 1.4.3

v2.30.1

Update kubectl to 1.4.3

Jenkins 2.30

v2.30

Update to 2.30 which works with pipelines again

Upgrade Jenkins to 2.29, kubectl to 1.3.8 and docker to 1.12.2

v2.29

Upgrade Jenkins to 2.29, kubectl to 1.3.8 and docker to 1.12.2

Jenkins 2.19 + kubectl-1.3.8 and docker-1.12.2

v2.19.2

Switch to jenkins 2.19, as 2.29 has issues