Tests: Add case for package version file unmatched policy scope

Tests/RunCMake/find_package/PolicyPop-result.txt

+1

Tests/RunCMake/find_package/PolicyPop-stderr.txt

+^CMake Error at PolicyPop/PolicyPopConfigVersion.cmake:3 \(cmake_policy\):
+  cmake_policy POP without matching PUSH
+Call Stack \(most recent call first\):
+  PolicyPop.cmake:1 \(find_package\)
+  CMakeLists.txt:3 \(include\)$

Tests/RunCMake/find_package/PolicyPop.cmake

+find_package(PolicyPop 1 CONFIG PATHS ${CMAKE_CURRENT_SOURCE_DIR}/PolicyPop NO_DEFAULT_PATH)

Tests/RunCMake/find_package/PolicyPop/PolicyPopConfigVersion.cmake

+set(PACKAGE_VERSION 1)
+set(PACKAGE_VERSION_COMPATIBLE 1)
+cmake_policy(POP)

Tests/RunCMake/find_package/PolicyPush-result.txt

+1

Tests/RunCMake/find_package/PolicyPush-stderr.txt

+^CMake Error at PolicyPush/PolicyPushConfigVersion.cmake:1 \(find_package\):
+  cmake_policy PUSH without matching POP
+Call Stack \(most recent call first\):
+  PolicyPush.cmake:1 \(find_package\)
+  CMakeLists.txt:3 \(include\)$

Tests/RunCMake/find_package/PolicyPush.cmake

+find_package(PolicyPush 1 CONFIG PATHS ${CMAKE_CURRENT_SOURCE_DIR}/PolicyPush NO_DEFAULT_PATH)

Tests/RunCMake/find_package/PolicyPush/PolicyPushConfigVersion.cmake

+set(PACKAGE_VERSION 1)
+set(PACKAGE_VERSION_COMPATIBLE 1)
+cmake_policy(PUSH)

Tests/RunCMake/find_package/RunCMakeTest.cmake

@@ -13,4 +13,6 @@ run_cmake(MissingConfigOneName)
 run_cmake(MissingConfigRequired)
 run_cmake(MissingConfigVersion)
 run_cmake(MixedModeOptions)
+run_cmake(PolicyPush)
+run_cmake(PolicyPop)
 run_cmake(SetFoundFALSE)