Im

* Fix error getting IP info in OCCI conn.
* Enable to reset the add_public_ip_count in the OCCI/OST conns.
* Improve Azure instance_type selection.
* Improve GCE instance type selection.
* Manage DNS records in EC2, Azure and GCE connectors.
* Fix error in Azure conn creating a VM with only a public net attached.

* Fix error in contextualization nodes with private keys.
* Improve OpenNebula conn with new ver. 5 functions as SGs.
* Improve error mesage in case of invalid proxy in OCCI conn.
* Fix error in Azure connector creating a VM with two nics.
* Fix error in Azure connector creating Storage Account with more than 24 chars.

* Fix errors with python3
* Fix error in some SFTP functions in SSH class.
* Change default value of REMOTE_CONF_DIR to /var/tmp.
* Enable to specify a port range in outports.
* Add functions to create VM snapshots.
* Fix error in OCCI conn setting public key.
* Improve SG management in connectors EC2 and OpenStack.
* Add support to OTC.
* In case of hybrid infrastructures some connector will not remove all resources.
* Select a random pool in case of OpenStack site in OCCI conn.
* Detach volumes before removing it in OCCI conn.
* Support OpenStack calls with VOMS proxies.

* Improve error messages in case of internal connector errors.
* Add Python 3 compatibility.
* Improve VM launch paralelism.
* Enrich the logging entries + stack trace with the infra id.
* Improve OCCI cloud_init data process.
* Add VMINFO_JSON conf var to enable the GetVMInfo function return JSON RADL.

* Fix error configuring VMs with sudo with password.
* Improve load data.
* Fix Bug in IM in HA mode getting old data.
* Merge correctly local /etc/hosts with IM generated data.
* Bootstrap ansible master VM with python if it does not have it installed.
* Fix Error configuring VMs with sudo with password.
* Fix errors in EC2, GCE and OCCI connectors.
* Add new timeout config value for SSH access.
* Add support for cheroot library.

* Remove DATA_FILE from configuration. Only DB now.
* Change DB format. Old 1.4.X data must be updated.
Use the script: db_1_4_to_1_5.py to update the DB format:
* Install new IM 1.5.0 version.
* In case that you were using a DATA_FILE to store the IM data (the default option in old version of IM), define the DATA_DB in the im.cfg file.
* Execute the script db_1_4_to_1_5.py (https://raw.githubusercontent.com/grycap/im/master/scripts/db_1_4_to_1_5.py).
* In case that you were using a DATA_FILE you have to specify it as the first parameter of the script.
* If you were using a DATA_DB to store your data this parameter is not needed.
* The data will be moved to the new format and old data will be renamed as table inf_list_XXXXXX.
* Remove use of insecure Pickle data.
* Add Vault support.
* Bugfix with sqlite databases.
* Fix some Kubenetes connector errors.
* Improve Docker connector.
* Bugfix killing child processes.
* Error in GCE connector in case of multiples nodes.
* Add FW creation support in GCE connector.
* Move connectors from httplib to requests lib enhancement.
* Improve data management in DB to enable HA enhancement.
* Move Azure connector to Resource Groups API enhancement.
* Change SOAPpy lib to suds.
* Add support for OpenStack pool name in OCCI connector.