[develop] Fix rrfs_utils bug in devbuild script

[EdwardSnyder-NOAA]

DESCRIPTION OF CHANGES:

The devbuild.sh is unable to build the rrfs_utils app even if it is being called from the command line like in:
./devbuild.sh -p=<platform> all or ./devbuild.sh -p=<platform> gsi rrfs_utils. After some investigation it appears the -DBUILD_RRFS_UTILS option was accidently removed from the cmake settings in PR #549. Adding this line back in causes the rrfs_utils app to build again.

Moved into a separate PR since a number of us need to build the rrfs_utils app.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

TESTS CONDUCTED:

• hera.intel
• orion.intel
• cheyenne.intel
• cheyenne.gnu
• gaea.intel
• jet.intel
• wcoss2.intel
• NOAA Cloud (indicate which platform)
• Jenkins
• fundamental test suite
• comprehensive tests (specify which if a subset was used)

DEPENDENCIES:

DOCUMENTATION:

ISSUE:

CHECKLIST

• My code follows the style guidelines in the Contributor's Guide
• I have performed a self-review of my own code using the Code Reviewer's Guide
• I have commented my code, particularly in hard-to-understand areas
• My changes need updates to the documentation. I have made corresponding changes to the documentation
• My changes do not require updates to the documentation (explain).
• My changes generate no new warnings
• New and existing tests pass with my changes
• Any dependent changes have been merged and published

LABELS (optional):

A Code Manager needs to add the following labels to this PR:

• Work In Progress
• bug
• enhancement
• documentation
• release
• high priority
• run_ci
• run_we2e_fundamental_tests
• run_we2e_comprehensive_tests
• Needs Cheyenne test
• Needs Jet test
• Needs Hera test
• Needs Orion test
• help wanted

CONTRIBUTORS (optional):

[danielabdi-noaa]

Thanks, I need this PR.

[MichaelLueken]

@EdwardSnyder-NOAA This change looks good to me! I was able to clone your branch and build the GSI and RRFS_UTILS without issue. Approving this now.