cran support in nexus

[JaimieWi]

What is being addressed

Add support for R and R studio to install packages through Nexus.

Three steps required:

1. Add https://cran.r-project.org/ to Nexus
2. Configure the Rprofile.site file on the VMs to use Nexus as the default repo
3. Adding the two required URLs to the Firewall configuration: https://cran.r-project.org/, https://cloud.r-project.org/

Windows then required an additional step due to cert revocation. Therefore, port 80 has been opened for the workspace NSGs and a new set of Target FQDNs added to the firewall. These were identified by looking through the firewall logs and determining which destinations were required.

How is this addressed

1. Create cran_proxy_support.json to add r to Nexus.
2. Edit templates/shared_services/sonatype-nexus-vm/terraform/firewall.tf and templates/shared_services/sonatype-nexus-vm/terraform/locals.tf to add windows firewall rule for CRL.
3. Edit templates/workspaces/base/terraform/network/security.tf to open port 80 on workspace nsg, set to be priority 101.
4. Edit vm config files to set default repo to be Nexus

[github-actions]

Unit Test Results

0 tests   - 17   0 ✔️  - 17   0s ⏱️ -6s
0 suites  -   1   0 💤 ±  0 
0 files    -   1   0 ❌ ±  0 

Results for commit f7336e4. ± Comparison against base commit 32533a6.

♻️ This comment has been updated with latest results.

[damoodamoo]

/test-shared-services 2479289

[github-actions]

🤖 pr-bot 🤖

🏃 Running shared service tests: https://github.com/microsoft/AzureTRE/actions/runs/3271876268 (with refid af1d1a27)

(in response to this comment from @damoodamoo)

[damoodamoo]

Woooop! LGTM :)

[damoodamoo]

/test-force-approve

[github-actions]

🤖 pr-bot 🤖

✅ Marking tests as complete (for commit f7336e4)

(in response to this comment from @damoodamoo)