Fix #1420, updating OSAL to use new versioning system.

[dzbaker]

Checklist (Please check before submitting)

• [x] I reviewed the Contributing Guide.
• [x] I signed and emailed the appropriate Contributor License Agreement to GSFC-SoftwareRelease@mail.nasa.gov and copied cfs-program@lists.nasa.gov.

Describe the contribution Fixes #1420.

Testing performed Workflows were run.

Expected behavior changes No behavior changes, however the following changes were made to the versioning system:

1. Build Baseline is set to "equuleus-rc1"
2. Mission Revision is set to to 00
3. "OS_BUILD_DEV_CYCLE" macro has been defined
4. Version String has been removed, and all references to it replaced with the Build Baseline/Codename

System(s) tested on Ubuntu 20.04

Contributor Info - All information REQUIRED for consideration of pull request Dylan Z. Baker/NASA GSFC