feat: Add runtime config for ssh proxy

See merge request !143

Assign multiple Floating IPs to proxy nodes when needed

See merge request rc/hpc-factory!141

feat: Add search domains and nameserver for prod

See merge request !142

Facilitate testing PRs from an external repo hosted on GH

See merge request !122

Parse the target dir where the external repo will be cloned, from the
value of EXT_REPO_DIR var. Use this var to replace all instances where
the repo name is hardcoded.

This will let you define the branch name for the PR you want to test
from the src repo and target branch to merge into, in the target repo

This will enable us to define the upstream and downstream repos hosted
external to gitlab (For eg. Github)

Define Floating IPs as a list so that we can assign multiple
whenever needed like in prod

Feat nfs mount switch

See merge request !137

Feat make mount opts as variable

See merge request !139

Now as a dictionary that includes:
- src: mount source
- path: mount path
- opts: mount options

Define group in ansible hosts file dynamically for localhost

See merge request !138

feat: dynamic create hosts inventory file

See merge request !133

fix: disable dns updated by NetworkManager

See merge request !135

fix: install boto3

See merge request !134

Feat- Add role for managing SSH host keys

See merge request !129

fix: update cluster hook playbook name

See merge request !132

Feat remove resource autocreation

See merge request !130

fix: change variable for enable proxy build

See merge request !131