vyos-build: T7357: add libnss-mapuser package

After renaming the package from libnss-mapuser to vyos-libnss-mapuser
in T7336-new-package-name, the package is missing from
scripts/package-build/.

Adding it, taking libpam-radius-auth as an example. The dependency
is taking from the Build-Depends field of the debian/control file
of the libnss-mapuser package.

Signed-off-by: Thomas Kupper <thomas.kupper@gmail.com>

.github/workflows/trigger_rebuild_packages.yml

@@ -53,6 +53,8 @@ jobs:
               - 'scripts/package-build/kea/**'
             keepalived:
               - 'scripts/package-build/keepalived/**'
+            libnss-mapuser:
+              - 'scripts/package-build/libnss-mapuser/**'
             libpam-radius-auth:
               - 'scripts/package-build/libpam-radius-auth/**'
             linux-kernel:
@@ -167,6 +169,10 @@ jobs:
             trigger_build "keepalived"
           fi
 
+          if [ "${{ steps.changes.outputs.libnss-mapuser }}" == "true" ]; then
+            trigger_build "libnss-mapuser"
+          fi
+
           if [ "${{ steps.changes.outputs.libpam-radius-auth }}" == "true" ]; then
             trigger_build "libpam-radius-auth"
           fi

scripts/package-build/libnss-mapuser/.gitignore

@@ -0,0 +1 @@
+/libnss-mapuser/

scripts/package-build/libnss-mapuser/build.py

@@ -0,0 +1 @@
+../build.py

scripts/package-build/libnss-mapuser/package.toml

@@ -0,0 +1,9 @@
+[[packages]]
+name = "libnss-mapuser"
+commit_id = "current"
+scm_url = "https://github.com/vyos/libnss-mapuser.git"
+
+[dependencies]
+packages = [
+    "libaudit-dev"
+]