Changes cloud-init so that interfaces are not brought up before
netplan apply.  This allows netplan to start the dhcp client.

Added network packets to monitoring section.

Signed-off-by: beierl <mbeierl@vmware.com>

Moves network config from charm to cloud-init so that it will
persist across reboots.

Signed-off-by: beierl <mbeierl@vmware.com>

Adds the NextEPC VNFD, NSD, charms and a build script,
Based of content from VNF Onboarding walkthrough.

Signed-off-by: beierl <mbeierl@vmware.com>

Adding notes and examples for config drive support, using --config-file, proxy charms order of operations, charm naming convention, juju deletion issue, juju charms monitoring

Minor review comments on the onboarding document

See merge request !3

Signed-off-by: Carolina Fernandez <carolina.fernandez@i2cat.net>

Merge branch '2-follow-up-from-format-review-unifying-nfvi-requirements-including-epa' into 'master'

Resolve "Follow-up from "Format review": Unifying NFVI requirements including EPA?"

Closes #2

See merge request !2

Merge branch 'master' into '2-follow-up-from-format-review-unifying-nfvi-requirements-including-epa'

# Conflicts:
#   01-requirements.md

- Unified both sections
- Changed numbered list to subsections

Format review

See merge request !1