Adding ignored option to security-tests-all.sh script.

Adding ignored option to security-tests-all.sh script.
RUNNER_IGNORED_MSG("Ignore text"); should be added in the beginning of
test body. For turning off ignored option security-tests-all.sh should run with
additional --noignored flag. For single scripts ignored option is turned off
by default. To turn it on flag --runignored should be added.
For example:
* security-tests-all.sh
* security-tests-all.sh --noignored
* libprivilege-control-tests --output=text --runignored

[Issue#]        SSDWSSP-343
[Bug/Feature]   Ignore option should be added because some tests
                could be made for unimplemented or not yet fixed
                functionalities.
[Cause]         N/A
[Solution]      N/A
[Verification]  Running tests. With ignored option function reaching
                RUNNER_IGNORED_MSG should be classified as Ignored
                in single test result and increment Ignored count in result
                for each test group.

Change-Id: I883500d80c2933de24e51c7b94810ba543392b1d