Fix OpenSuse >= 15 support (#319)

distro.py

@@ -84,6 +84,7 @@ class InfoDict(TypedDict):
 #: * Value: Normalized value.
 NORMALIZED_OS_ID = {
     "ol": "oracle",  # Oracle Linux
+    "opensuse-leap": "opensuse",  # Newer versions of OpenSuSE report as opensuse-leap
 }
 
 #: Translation table for normalizing the "Distributor ID" attribute returned by

tests/resources/distros/opensuse15/etc/os-release

@@ -0,0 +1,10 @@
+NAME="openSUSE Leap"
+VERSION="15.2"
+ID="opensuse-leap"
+ID_LIKE="suse opensuse"
+VERSION_ID="15.2"
+PRETTY_NAME="openSUSE Leap 15.2"
+ANSI_COLOR="0;32"
+CPE_NAME="cpe:/o:opensuse:leap:15.2"
+BUG_REPORT_URL="https://bugs.opensuse.org"
+HOME_URL="https://www.opensuse.org/"

tests/test_distro.py

@@ -308,6 +308,18 @@ def test_opensuse42_os_release(self) -> None:
         }
         self._test_outcome(desired_outcome)
 
+    def test_opensuse15_os_release(self) -> None:
+        desired_outcome = {
+            "id": "opensuse",
+            "name": "openSUSE Leap",
+            "pretty_name": "openSUSE Leap 15.2",
+            "version": "15.2",
+            "pretty_version": "15.2",
+            "best_version": "15.2",
+            "like": "suse opensuse",
+        }
+        self._test_outcome(desired_outcome)
+
     def test_raspbian7_os_release(self) -> None:
         desired_outcome = {
             "id": "raspbian",
@@ -1352,6 +1364,20 @@ def test_opensuse42_release(self) -> None:
         }
         self._test_release_file_info("SuSE-release", desired_info)
 
+    def test_opensuse15_release(self) -> None:
+        desired_outcome = {
+            "id": "opensuse",
+            "name": "openSUSE Leap",
+            "pretty_name": "openSUSE Leap 15.2",
+            "version": "15.2",
+            "pretty_version": "15.2",
+            "best_version": "15.2",
+            "like": "suse opensuse",
+            "major_version": "15",
+            "minor_version": "2",
+        }
+        self._test_outcome(desired_outcome)
+
     def test_oracle7_release(self) -> None:
         desired_outcome = {
             "id": "oracle",