Set image.rootless to true by default (#449)

fix #432

Assuming that "everybody" is meanwhile on > 1.14.

Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/449

unittests/init/init_directory_structure.sh.yaml

@@ -7,6 +7,7 @@ templates:
 tests:
   - it: runs gpg in batch mode
     set:
+      image.rootless: false
       signing.enabled: true
       signing.privateKey: |-
         -----BEGIN PGP PRIVATE KEY BLOCK-----
@@ -21,6 +22,8 @@ tests:
 
             gpg --batch --import /raw/private.asc
   - it: skips gpg script block for disabled signing
+    set:
+      image.rootless: false
     asserts:
       - equal:
           path: stringData["init_directory_structure.sh"]
@@ -41,6 +44,7 @@ tests:
             chmod ug+rwx "${GITEA_TEMP}"
   - it: adds gpg script block for enabled signing
     set:
+      image.rootless: false
       signing.enabled: true
       signing.privateKey: |-
         -----BEGIN PGP PRIVATE KEY BLOCK-----