Small typo in FBoss exception message when not fully initialized
Small typo in FBoss exception message when not fully initialized

Summary:
This was captured in TOR logs for "tor-client result 3272361", a conversion on rsw1ft.13.frc1:

2015-06-16 03:06:12: Switch ping check - **FAIL**: Unable to query FBOSS inband addresses: FbossBaseError(
_message='switch is still initializing or is exiting and is notfully configured yet',
message='switch is still initializing or is exiting and is notfully configured

Test Plan: Ran all tests via fbconfig -- https://phabricator.fb.com/P19898508.

Reviewed By: jasmeetbagga@fb.com

Subscribers: net-systems@, exa, dgadling

FB internal diff: D2203586

Tasks: 7434130

Signature: t1:2203586:1435683818:37c114972ded1e3305d090646b9b645f8619177e

sonoble/fboss,raphaelamorim/fboss,peterlei/fboss,peterlei/fboss,sonoble/fboss,neuhausler/fboss,sonoble/fboss,neuhausler/fboss,raphaelamorim/fboss,neuhausler/fboss,biddyweb/fboss,biddyweb/fboss,peterlei/fboss,neuhausler/fboss,raphaelamorim/fboss,biddyweb/fboss,peterlei/fboss