Update CHANGELOG with 6.6.2 notes

Signed-off-by: Derek Richard <drichard@pivotal.io>
validate plugin binary upon install

Signed-off-by: Daniel Lavine <dlavine@us.ibm.com>
install handles conflicting commands
update plugin config to store data for each command
Cf help shows plugin info based on plugin_config

[#78234404]

Signed-off-by: Tyler Schultz <tschultz@pivotal.io>
Remove obsolete plugin methods

Signed-off-by: Tyler Schultz <tschultz@pivotal.io>
Use cached plugin config data instead of rpc'ing the plugin

Signed-off-by: Derek Richard <drichard@pivotal.io>
Remove unneeded 'command exists' rpc call to plugins

Signed-off-by: Derek Richard <drichard@pivotal.io>
Compile test plugins to one directory

Signed-off-by: Derek Richard <drichard@pivotal.io>
Use testhelper to build test plugin binaries

-Remove stale binaries at beginning of each test run in bin/test

Signed-off-by: Derek Richard <drichard@pivotal.io>
Rename pluginMetaData retrieval command argument (installing plugin)

Signed-off-by: Derek Richard <drichard@pivotal.io>
Fix removing of plugin binaries in bin/test

-Exited non-zero if test binaries had already been deleted

Signed-off-by: Derek Richard <drichard@pivotal.io>
consolidate fixtures

Signed-off-by: Derek Richard <drichard@pivotal.io>