SRE-2171 ci: Accept and propagate a run-gha variable (#15576)

For the case where daos is being used as a downstream test.

Signed-off-by: Brian J. Murrell <[email protected]>

.github/workflows/rpm-build-and-test.yml

@@ -42,6 +42,11 @@ on:
       functional-test-distros:
         description: 'Distros to run Functional testing on (i.e. el8 el9 leap15, etc.)'
         required: false
+      run-gha:
+        description: 'Run the GHA build and tests'
+        required: false
+        type: boolean
+        default: false
   pull_request:
   push:
     branches:
@@ -85,7 +90,7 @@ jobs:
   Call-RPM-Build:
     name: Build RPM
     needs: Variables
-    if: inputs.rpm-test-version == ''
+    if: inputs.rpm-test-version == '' || inputs.run-gha
     permissions:
       statuses: write
     uses: daos-stack/actions-lib/.github/workflows/rpm-build.yml@v1
@@ -98,6 +103,7 @@ jobs:
       LEAP15_VERSION: ${{ needs.Variables.outputs.LEAP15_VERSION }}
       PACKAGING_DIR: ${{ needs.Variables.outputs.PACKAGING_DIR }}
       COVFN_DISABLED: ${{ fromJSON(needs.Variables.outputs.COVFN_DISABLED) }}
+      RUN_GHA: ${{ fromJSON(inputs.run-gha) }}
 
   Calc-functional-matrix:
     name: Calculate Functional Testing Matrix