parametrized syntax checker

Scan the whole source tree when invoked without parameters, check
specified files when a list of files is passed in parameters.
Merge pull request #538 from xarses/syntax-check-parametrized

parametrized syntax checker
Generete Fuel UUID during master node installation
Generate Fuel UUID using 'uuidgen' tool
Fix typo
Read Fuel key from /etc/fuel-uuid
FIX: duplicate declaration
Merge pull request #545 from xenolog/PR3

FIX: duplicate declaration
fuel cli link
Merge pull request #544 from e0ne/fuel-key

Fuel key generation
Merge pull request #549 from dmi-try/fuel-cli

fuel cli symlink
FIX: lost '$' before variable
Merge pull request #555 from xenolog/master

FIX: lost '$' before variable