tmt: Enable extra storage tests on image mode

Skip `TestStorageLvm2.testDegradation` on CentOS 10, see comment. This
needs more involved investigation, but let's enable all the other tests
for now.

Final bit of https://issues.redhat.com/browse/COCKPIT-1214

plans/all.fmf

@@ -23,9 +23,5 @@ environment:
 
 /storage-extra:
     summary: More expensive storage tests (LVM, LUKS, Anaconda)
-    # FIXME: tests need a lot of work to pass in image mode
-    adjust+:
-        when: distro ~ .*image-mode
-        enabled: false
     discover+:
         test: /test/browser/storage-extra

test/browser/main.fmf

@@ -100,6 +100,7 @@
     - firewalld
     - lvm2
     - nfs-utils
+    - parted
     - rpm-build
     - stratis-cli
     - stratisd

test/browser/run-test.sh

@@ -215,6 +215,13 @@ if [ "$PLAN" = "storage-extra" ]; then
               TestStorageMountingLUKS.testDuplicateMountPoints
               TestStorageMountingLUKS.testNeverAuto
               "
+
+    if [ "$TEST_OS" = "centos-10-bootc" ]; then
+        # FIXME: targetcli fails with code 255 and no error message; needs investigation
+        EXCLUDES="$EXCLUDES
+                  TestStorageLvm2.testDegradation
+                  "
+    fi
 fi
 
 exclude_options=""