Parse THEIA_PORT environment variable
Parse THEIA_PORT environment variable

Parse THEIA_PORT environment variable in Theia start.sh script
to prevent failure of Theia start on k8s when there is a k8s
service "theia" and k8s injects THEIA_PORT environment variable
with a value such as tcp://19.19.191.19:3000
Signed-off-by: Oleksandr Garagatyi <4052944973da826587020fa2673f873866877623@redhat.com>

Signed-off-by: Oleksandr Garagatyi <4052944973da826587020fa2673f873866877623@redhat.com>

codenvy/che,akervern/che,akervern/che,davidfestal/che,akervern/che,davidfestal/che,akervern/che,codenvy/che,davidfestal/che,davidfestal/che,davidfestal/che,akervern/che,akervern/che,akervern/che,davidfestal/che,davidfestal/che,akervern/che,codenvy/che,codenvy/che,akervern/che,davidfestal/che,davidfestal/che,davidfestal/che