Created new patterns activemq-private-lambda-python-sam, documentdb-lambda-python-sam and rabbitmq-private-lambda-python-sam and fixed maven installation issue in two existing Java patterns

activemq-private-lambda-python-sam/.gitignore

@@ -0,0 +1,55 @@
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*
+
+node_modules
+npm-debug.log
+package-lock.json
+package
+*out.yml
+out.json
+bucket-name.txt
+target
+build
+.gradle
+*.zip
+bin
+obj
+Gemfile.lock
+lib
+__pycache__
+*.pyc
+.classpath
+.factorypath
+.project
+.settings/*
+.aws
+.sam
+.aws-sam
+samconfig.toml
+__init__.py
+.DS_Store
+.project
+org.eclipse.jdt.core.prefs
+org.eclipse.core.resources.prefs