test-NIT.sh, .github/workflows/04-maven-nit.yml: default to DO_USE_NUTCI_CACHE=yes in CI and developer runs [networkupstools/nut#3109]

Signed-off-by: Jim Klimov <jimklimov@gmail.com>

Author: jimklimov

.github/workflows/04-maven-nit.yml

@@ -95,6 +95,7 @@ jobs:
       with:
         path: |
             ~/nit.sh.bak
+            ~/.cache/nut-ci
         key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/.timestamp-init') }}
         restore-keys: |
           ${{ runner.os }}-build-${{ env.cache-name }}-
@@ -104,4 +105,4 @@ jobs:
     - if: matrix.os == 'ubuntu-latest'
       name: Test jNut with NIT
       run: |
-        PATH="${HOME}:${PATH}" ./test-NIT.sh
+        DO_USE_NUTCI_CACHE=yes PATH="${HOME}:${PATH}" ./test-NIT.sh

test-NIT.sh

@@ -30,6 +30,10 @@
 # not so much general NUT_DEBUG_LEVEL that would add noise from drivers:
 [ -n "${NUT_DEBUG_LEVEL_UPSD}" ] || NUT_DEBUG_LEVEL_UPSD=6
 
+# Re-use test certificates if we can, focus on jNut testing:
+[ -n "${DO_USE_NUTCI_CACHE-}" ] || DO_USE_NUTCI_CACHE=yes
+export DO_USE_NUTCI_CACHE
+
 # Normalize incoming paths, e.g. avoid `~` chars for home-dir builds if we can:
 if [ -n "${NUT_BUILDDIR-}" ] ; then
     D="`cd \"${NUT_BUILDDIR}\" && pwd`" && NUT_BUILDDIR="$D"