Fix logic in bash inside installContrailCompute method

Existing logic leads to unconditional reboot of cmp nodes
inside installContrailCompute method.
If vhost0 interface is already present, cmp node shouldn't be rebooted.

Change-Id: I1a43c3a1d95b81f55aec345ab8f173df9482ef2a
Related-PROD: PROD-25554
(cherry picked from commit 817b0df8af5696112c16aa5988a1b596ba978fc3)
1 file changed