[FIX] Use system include to suppress warnings (during compilation) caused by the…

[FIX] Use system include to suppress warnings (during compilation) caused by the faulty OpenIGTLink header file
6 jobs from master in 57 minutes 20 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Initialization Stage
passed #1826
create_directory_and_cmake___debug

03:12

passed #1825
create_directory_and_cmake___release

00:37

 
  Stylecheck Doc Stage
passed #1828
doc_job

04:46

passed #1827
stylecheck_job

03:08

 
  Build And Test Release Stage
passed #1829
buildAndTest

20:52

 
  Build And Test Debug Stage
passed #1830
buildAndTestDebug

24:43