coin: Prepare for removing macOS 10.14 as a supported deployment target

Change-Id: I9fcee3df2d9bfeb8f920df8a30e3e1b556874fd4
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

coin/platform_configs/macos.yaml

@@ -33,12 +33,6 @@ Configurations:
 
     # Test on all supported macOS versions (deployment targets)
 
-    -
-        Id: 'macos-10.14-x86_64-tests'
-        Template: 'qtci-macos-10.14-x86_64'
-        Compiler: 'Clang'
-        Features: ['Sccache', 'TestOnly', 'Packaging']
-        Platform dependency: 'macos-latest-xcode-universal-packaging-build'
     -
         Id: 'macos-10.15-x86_64-tests'
         Template: 'qtci-macos-10.15-x86_64-102'
@@ -109,12 +103,6 @@ Configurations:
 
     # Test on all supported macOS versions (deployment targets)
 
-    -
-        Id: 'macos-10.14-x86_64-developer-build-tests'
-        Template: 'qtci-macos-10.14-x86_64'
-        Compiler: 'Clang'
-        Features: ['Sccache', 'TestOnly']
-        Platform dependency: 'macos-latest-xcode-x86_64-developer-build'
     -
         Id: 'macos-10.15-x86_64-developer-build-tests'
         Template: 'qtci-macos-10.15-x86_64-102'

coin/platform_configs/qt-creator.yaml

@@ -28,7 +28,7 @@ Configurations:
     Configure arguments: ''
     Environment variables: []
 -
-    Template: 'qtci-macos-10.14-x86_64'
+    Template: 'qtci-macos-10.15-x86_64-1022'
     Compiler: 'Clang'
     Features: ['Packaging', 'Sccache', 'DebugAndRelease']
     Configure arguments: ''

coin/provisioning/common/unix/install-ffmpeg.sh

@@ -86,13 +86,13 @@ if [ "$os" == "linux" ]; then
 
 elif [ "$os" == "macos" ]; then
   brew install yasm
-  export MACOSX_DEPLOYMENT_TARGET=10.14
+  export MACOSX_DEPLOYMENT_TARGET=10.15
   build_ffmpeg
   sudo mv "$ffmpeg_source_dir/build/installed/usr/local/$ffmpeg_name" "/usr/local"
 
 elif [ "$os" == "macos-universal" ]; then
   brew install yasm
-  export MACOSX_DEPLOYMENT_TARGET=10.14
+  export MACOSX_DEPLOYMENT_TARGET=10.15
   build_ffmpeg "arm64"
   build_ffmpeg "x86_64"
 

coin/provisioning/common/unix/install-openssl.sh

@@ -83,7 +83,7 @@ elif [ "$os" == "macos" -o "$os" == "macos-universal" ]; then
 
     commonFlags="no-tests shared no-ssl3-method enable-ec_nistp_64_gcc_128 -Wa,--noexecstack"
 
-    export MACOSX_DEPLOYMENT_TARGET=10.14
+    export MACOSX_DEPLOYMENT_TARGET=10.15
 
     opensslBuild="${opensslHome}-build"
     opensslDestdir="${opensslHome}-destdir"