[Fuego] Jenkins Upgrade on Fuego

Tim,

Following procedure was followed to update Jenkins on Fuego. Note that the
Jenkins was updated to version 2.235.3 with the below mentioned procedure.

(1) Did the below changes to the docker file:

*** Dockerfile.orig 2020-08-24 12:04:21.354920683 +0530
--- Dockerfile 2020-10-12 12:30:03.573646056 +0530
***************
*** 105,112 ****
  ARG uid=1000
  ARG gid=${uid}
  ARG JENKINS_PORT=8090
! ARG JENKINS_VERSION=2.164.2
! ARG JENKINS_SHA=4536f43f61b1fca6c58bd91040fa09304eea96ab
  ARG JENKINS_URL=
https://pkg.jenkins.io/debian-stable/binary/jenkins_${JENKINS_VERSION}_all.deb
  ARG JENKINS_UC=https://updates.jenkins.io
  ARG REF=/var/lib/jenkins/plugins
--- 105,112 ----
  ARG uid=1000
  ARG gid=${uid}
  ARG JENKINS_PORT=8090
! ARG JENKINS_VERSION=2.235.3
! ARG
JENKINS_SHA=e88642a2b52fc26ffa4425a0aba65163f083d770e5ef7182b2e32de41ff33981
  ARG JENKINS_URL=
https://pkg.jenkins.io/debian-stable/binary/jenkins_${JENKINS_VERSION}_all.deb
  ARG JENKINS_UC=https://updates.jenkins.io
  ARG REF=/var/lib/jenkins/plugins

(2) Run the install.sh script

(3) "ftc" add-job commands were failing after migration to the new Jenkins
version. On debugging, it was figured out that there was an explicit
invocation of "jenkins-cli.jar" file to create jobs. This file was missing
after migration to the new version. However, this file had been
rechristened as cli-2.235.3.jar in the migrated jenkins version and moved
to the directory: /var/cache/jenkins/war/WEB-INF/lib. Hence, the following
softlink was added for smooth execution of "ftc" commands.

cd /var/cache/jenkins/war/WEB-INF
ln -s lib/cli-${JENKINS_VERSION}.jar jenkins-cli.jar

After the above steps, everything started working.

The following pipeline related plugins (along with their respective
versions) were explicitly installed to suit our requirements.
    (1) pipeline-build-step - 2.12
    (2) pipeline-graph-analysis - 1.10
    (3) pipeline-input-step - 2.11
    (4) pipeline-milestone-step - 1.3.1
    (5) pipeline-model-api - 1.6.0
    (6) pipeline-model-declarative-agent - 1.1.1
    (7) pipeline-model-definition - 1.6.0
    (8) pipeline-model-extension - 1.6.0
    (9) pipeline-rest-api - 2.14
    (10) pipeline-stage-step - 2.4
    (11) pipeline-stage-tags-metadata - 1.6.0
    (12) pipeline-stage-view - 2.14


Regards,
Srivatsan

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