Fix shellcheck scan errors and warnings (#411)

* Fix shellcheck errors and warnings

Signed-off-by: Ilya Isaev <ilya.isaev@intel.com>

* Apply comments and parse args properly on ZSH

Signed-off-by: Ilya Isaev <ilya.isaev@intel.com>

* Parse ia32 via regex

Signed-off-by: Ilya Isaev <ilya.isaev@intel.com>

* arg_ia32 to tbb_arg_ia32

Signed-off-by: Ilya Isaev <ilya.isaev@intel.com>

* Fix indenting

Signed-off-by: Ilya Isaev <ilya.isaev@intel.com>

* Change regex

Signed-off-by: Ilya Isaev <ilya.isaev@intel.com>