feat(gost/ubuntu): check kernel source package more strictly (#1599)

gost/ubuntu_test.go

@@ -278,3 +278,54 @@ func Test_detect(t *testing.T) {
 		})
 	}
 }
+
+func TestUbuntu_isKernelSourcePackage(t *testing.T) {
+	tests := []struct {
+		pkgname string
+		want    bool
+	}{
+		{
+			pkgname: "linux",
+			want:    true,
+		},
+		{
+			pkgname: "apt",
+			want:    false,
+		},
+		{
+			pkgname: "linux-aws",
+			want:    true,
+		},
+		{
+			pkgname: "linux-5.9",
+			want:    true,
+		},
+		{
+			pkgname: "linux-base",
+			want:    false,
+		},
+		{
+			pkgname: "apt-utils",
+			want:    false,
+		},
+		{
+			pkgname: "linux-aws-edge",
+			want:    true,
+		},
+		{
+			pkgname: "linux-aws-5.15",
+			want:    true,
+		},
+		{
+			pkgname: "linux-lowlatency-hwe-5.15",
+			want:    true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.pkgname, func(t *testing.T) {
+			if got := (Ubuntu{}).isKernelSourcePackage(tt.pkgname); got != tt.want {
+				t.Errorf("Ubuntu.isKernelSourcePackage() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}