On config interface shutdown, xcvrd to not reset CMIS state

[shyam77git]

While reviewing CMIS PR changeset - #254 , found following issue:
Discussed with @prgeor and following is to be done (corrected/enhanced):

Issue: Why the cmis state is reseted when config-interface shutdown is configured. It supposed to avoid app_code reprogramming during this state.
@jaganbal-a updated: As mentioned in the PR comment, We can have new state as CMIS_STATE_HOST_READY and this to be set under “elif state == self.CMIS_STATE_DP_DEINIT:” and self.CMIS_STATE_AP_CONF will be set only after the host_tx_ready is turned true. This will prevent moving state from DP_DEINIT to AP_CONF by default.

[shyam77git]

@jaganbal-a , @prgeor

[prgeor]

this is fixed in latest commit #254 ...please check.