Tests: don't install and test gdisk stage

gdisk component has been removed from c10s / el10, therefore we should
not be installing it and testing the stage.

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

tests/unit-tests/prep-host-environment.sh

@@ -16,8 +16,7 @@ sudo dnf install -y \
     python3-mako \
     python3-pip \
     rpm-ostree \
-    dosfstools \
-    gdisk
+    dosfstools
 sudo dnf builddep -y osbuild.spec
 
 # Install pytst from pip, because the version in some RHEL / CentOS releases is too old

tests/unit-tests/run-unit-tests.sh

@@ -48,6 +48,8 @@ fi
 if ([ "${ID}" == "rhel" ] || [ "${ID}" == "centos" ]) && [ "${VERSION_ID%%.*}" == "10" ]; then
     # tomli_w package has been remowed so writin TOML config will fail
     TEST_SELECTION_EXPR="${TEST_SELECTION_EXPR} and not (test_write_read)"
+    # There is no gdisk package on el10
+    TEST_SELECTION_EXPR="${TEST_SELECTION_EXPR} and not (TestStages and test_sgdisk)"
 fi