Change default port to 8080 in install.rst
Change default port to 8080 in install.rst

Change-Id: I0742ea78f4ea018a756811d4c1721c9e0c2b6f02
Fixes: bug #1223860

rdo-management/tuskar-ui,rdo-management/tuskar-ui,rdo-management/tuskar-ui,rdo-management/tuskar-ui