Tests: update MD5SUMS test to have several files

The test is now updated to check the order of files
in the md5sums.

Tests/RunCMake/CPack/tests/MD5SUMS/ExpectedFiles.cmake

 set(EXPECTED_FILES_COUNT "1")
-set(EXPECTED_FILE_CONTENT_1_LIST "/foo;/foo/CMakeLists.txt")
+set(EXPECTED_FILE_CONTENT_1_LIST "/bar;/bar/CMakeLists.txt;/baz;/baz/CMakeLists.txt;/foo;/foo/CMakeLists.txt")

Tests/RunCMake/CPack/tests/MD5SUMS/VerifyResult.cmake

 set(whitespaces_ "[\t\n\r ]*")
-set(md5sums_md5sums "^.* usr/foo/CMakeLists\.txt${whitespaces_}$")
+set(hashsyms_ "[a-f0-9]+")
+set(md5sums_md5sums "^${hashsyms_}  usr/bar/CMakeLists\.txt${whitespaces_}${hashsyms_}  usr/baz/CMakeLists\.txt${whitespaces_}${hashsyms_}  usr/foo/CMakeLists\.txt${whitespaces_}$")
 verifyDebControl("${FOUND_FILE_1}" "md5sums" "md5sums")

Tests/RunCMake/CPack/tests/MD5SUMS/test.cmake

 install(FILES CMakeLists.txt DESTINATION foo COMPONENT test)
+install(FILES CMakeLists.txt DESTINATION bar COMPONENT test)
+install(FILES CMakeLists.txt DESTINATION baz COMPONENT test)
 
 if(PACKAGING_TYPE STREQUAL "COMPONENT")
   set(CPACK_COMPONENTS_ALL test)