[to be rebased away] stashing 999-hotpatching
add hotpatch test infrastructure
remove the old client package thing implemented before
hand pathes to server|client packages down to the remote_run script
add sudo at appropriate places
add common test function for running migration tests
add usage string to platforms/common_test.sh
remove run_migrationtests() from platforms/common_test.sh
handling package pathes in steering/remote_run.sh
fix architecture detection for slc5 x86
more verbose logging for package handling in migration_tests/common.sh
check (exported) package pathes for availability
TEST: hotpatching with last stable cvmfs version as base
run hotpatch test on SLC5 x86
remove hotpatch spike script (replaced by migration_tests/001-hotpatch)
adapt SLC5 x64
adapt SLC6 x86
adapt SLC6 x64
adapt Ubuntu x64
Merge pull request #258 from reneme/test_hotpatch

TEST: Hotpatching under File System Pressure

This contains infrastructural adaptions for cloud based tests of migration tests. Additionally there is a first test for hotpatching the cvmfs client under file system pressure.