[Ubuntu] Add Java 21 (#8560)

Author: vpolikarpov-akvelon

images/linux/scripts/installers/java-tools.sh

@@ -53,7 +53,12 @@ installOpenJDK() {
     # https://github.com/adoptium/temurin-build/issues/2248
     [[ ${fullJavaVersion} =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+ ]] && fullJavaVersion=$(echo $fullJavaVersion | sed -E 's/\.[0-9]+-/-/')
 
+    # When version string is too short, add extra ".0" to make it valid semver
+    [[ ${fullJavaVersion} =~ ^[0-9]+- ]] && fullJavaVersion=$(echo $fullJavaVersion | sed -E 's/-/.0-/')
+    [[ ${fullJavaVersion} =~ ^[0-9]+\.[0-9]+- ]] && fullJavaVersion=$(echo $fullJavaVersion | sed -E 's/-/.0-/')
+    
     javaToolcacheVersionPath="${JAVA_TOOLCACHE_PATH}/${fullJavaVersion}"
+    echo "Java ${JAVA_VERSION} Toolcache Version Path: ${javaToolcacheVersionPath}"
     mkdir -p "${javaToolcacheVersionPath}"
 
     # Create a complete file

images/linux/scripts/tests/Java.Tests.ps1

@@ -45,6 +45,6 @@ Describe "Java" {
         if ($Version -eq 8) {
             $Version = "1.${Version}"
         }
-        "`"$javaPath`" -version" | Should -MatchCommandOutput ([regex]::Escape("openjdk version `"${Version}."))
+        "`"$javaPath`" -version" | Should -MatchCommandOutput "openjdk\ version\ `"${Version}(\.[0-9_\.]+)?`""
     }
 }

images/linux/toolsets/toolset-2004.json

@@ -74,7 +74,7 @@
     ],
     "java": {
         "default": "11",
-        "versions": [ "8", "11", "17" ],
+        "versions": [ "8", "11", "17", "21"],
         "maven": "3.8.8"
     },
     "android": {

images/linux/toolsets/toolset-2204.json

@@ -68,7 +68,7 @@
     ],
     "java": {
         "default": "11",
-        "versions": [ "8", "11", "17" ],
+        "versions": [ "8", "11", "17", "21"],
         "maven": "3.8.8"
     },
     "android": {