upgrade of systemvm templates
README: Give CloudStack its much deserved readme file

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
(cherry picked from commit d753e765f7ca848e4cc79d25ba5fa986b8b63522)

Conflicts:
	README.md
README: Fix links for viewing on Github

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
(cherry picked from commit fc7b2baba33ee990c5edc70503d01acf55e6a973)
remove update to 4.3 templates for 4.4
CLOUDSTACK-7257: Missing LXC mappings, reuse KVM mappings
Merge remote-tracking branch 'origin/hotfix/4.4-7257' into 4.4
Merge remote-tracking branch 'origin/hotfix/4.4-svm-upgrade' into 4.4