Add summary view to all security tests.

Add summary view to all security tests.

[Issue#]       SSDWSSP-522
[Bug/Feature]  Running security tests via security-tests-all.sh prints
               summary view (all tests results summed together).
[Cause]        N/A
[Solution]     A new results collector for WRT tests runner was created
               (SummaryCollector in summary_collector.h). The collector
               counts all the test cases results and appends a line to
               a temporary file containing: number of all test cases,
               succeeded, failed and ignored.
               Then, after the tests are executed, tests-summary.sh
               sums the columns and prints summary in the console.
[Verification] Build, install, run all security tests via
               security-tests-all.sh and wait for summary at the very
               end of script output.

Change-Id: Id44cfb90acbc426e17e1971807e6eef0496c7805