Increase CI test coverage by changing GCC to ICC

There is already other place in which we compile with GCC on Linux.

As we use ninja now, it has to be installed on open suse too.
Cmake port depends on system libraries therefore pcre2 needs to be
installed.

Change-Id: I92e16cc31fa60b4c591e71b58cd7235540065ac6
Reviewed-by: Liang Qi <liang.qi@qt.io>

coin/platform_configs/default.yaml

@@ -2,10 +2,10 @@
     Compiler: 'GCC'
     Features: ['DisableTests']
     Configure arguments: '-DBUILD_TESTING=OFF -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DBUILD_EXAMPLES=OFF'
--   Template: 'qtci-linux-Ubuntu-18.04-x86_64'
-    Compiler: 'GCC'
+-   Template: 'qtci-linux-openSUSE-15.0-x86_64'
+    Compiler: 'ICC_18'
     Features: ['DisableTests']
-    Configure arguments: '-DBUILD_TESTING=OFF -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DBUILD_EXAMPLES=OFF -DFEATURE_developer_build=ON -DBUILD_SHARED_LIBS=OFF'
+    Configure arguments: '-DBUILD_TESTING=OFF -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON -DBUILD_EXAMPLES=OFF -DFEATURE_developer_build=ON -DBUILD_SHARED_LIBS=OFF -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc'
 -   Template: 'qtci-macos-10.13-x86_64-2'
     Compiler: 'Clang'
     Features: ['DisableTests']

coin/provisioning/qtci-linux-openSUSE-15.0-x86_64/02-zypperpackages.sh

@@ -2,7 +2,7 @@
 
 set -ex
 
-sudo zypper -nq install git gcc7 gcc7-c++
+sudo zypper -nq install git gcc7 gcc7-c++ ninja
 sudo /usr/sbin/update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 1 \
                                      --slave /usr/bin/g++ g++ /usr/bin/g++-7 \
                                      --slave /usr/bin/cc cc /usr/bin/gcc-7 \
@@ -17,7 +17,8 @@ sudo zypper -nq install bison flex gperf \
         fontconfig-devel \
         sqlite3-devel \
         libxkbcommon-devel \
-        libxkbcommon-x11-devel
+        libxkbcommon-x11-devel \
+        pcre2-devel libpng16-devel
 
 # EGL support
 sudo zypper -nq install Mesa-libEGL-devel Mesa-libGL-devel