ENTESB-11772: Generate a template from the operator configuration

[phantomjinx]

• Parses the internal operator configuration and exports an openshift
  template

• install/install.go

• Adds in the "forge" command for forging the template

• eg. syndesis-operator install forge
  --operator-config ./build/conf/config.yaml
  --addons todo --eject yaml

• install-forge.go

• Does the work of generating the new openshift template

• configuration.go

• Enhances the config constants by mapping them to their descriptions,
  default values, whether required and whether generated

• template/install.go

• Utilise the AllConfigMap for providing the default values

[phantomjinx]

Labelled as WIP at the moment in case major changes required.

[phantomjinx]

Execute command:
syndesis-operator install forge --operator-config ./build/conf/config.yaml --addons todo --eject yaml

Generates -> syndesis.yml

[heiko-braun]

Pretty cool, thanks Paul

[pure-bot]

Pull request approved by @lgarciaaco - applying pr/approved label

[heiko-braun]

@lgarciaaco @phantomjinx Is there a reason not to merge to 1.8.x?

[phantomjinx]

@lgarciaaco @phantomjinx Is there a reason not to merge to 1.8.x?

Just did a trial merge to 1.8.x local branch and seems straightforward so can backport if required.

@lgarciaaco
Does contain changes to the way default values are assigned. You may not want something like that backported. WDYT?

[backporting]

The backport to 1.8.x failed:

Commits ["f4a94d33f27082ca4fc119328d46cd4350e9bc36"] could not be cherry-picked on top of 1.8.x

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub.
git fetch
# Create new working tree.
git worktree add .worktrees/backport 1.8.x
# Navigate to the new directory.
cd .worktrees/backport
# Cherry-pick all the commits of this pull request and resolve the likely conflicts.
git cherry-pick f4a94d33f27082ca4fc119328d46cd4350e9bc36
# Create a new branch with these backported commits.
git checkout -b backport-6845-to-1.8.x
# Push it to GitHub.
git push --set-upstream origin backport-6845-to-1.8.x
# Go back to the original working tree.
cd ../..
# Delete the working tree.
git worktree remove .worktrees/backport

Then, create a pull request where the base branch is 1.8.x and the compare/head branch is backport-6845-to-1.8.x.

[heiko-braun]

@phantomjinx Can you create a PR manually? The bot doesn't seem to be capable of doing it.