Disable portal-app default page

Fix for Security: disable portal-app default page that targets tomcat 8.0.37 specific exploits issue
Fix default tomcat webapps removal command in Dockerfile.portal

Issue-ID: PORTAL-303
Change-Id: I9be563f0d824f687271fbdcf12e5785ff18ab83f
Signed-off-by: Parshad Patel <pars.patel@samsung.com>
1 file changed