Merge tag '0.8.0'

Release 0.8.0

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+@title = 'Upgrade to 0.8'
+@toc = false
+
+LEAP Platform release 0.8 introduces several major changes that need do get taken into account while upgrading:
+
+* Dropping Debian Wheezy support. You need to upgrade your nodes to jessie before deploying a platform upgrade.
+* Dropping BigCouch support. LEAP Platform now requires CouchDB and therefore you need to migrate all your data from BigCouch to CouchDB.
+
+Upgrading to Platform 0.8
+---------------------------------------------
+
+### Step 1: Get new leap_platform and leap_cli
+
+    workstation$ gem install leap_cli --version 1.8
+    workstation$ cd leap_platform
+    workstation$ git pull
+    workstation$ git checkout 0.8.0
+
+### Step 2: Prepare to migrate from BigCouch to CouchDB
+
+<%= render :partial => 'docs/platform/common/bigcouch_migration_begin.md' %>
+
+### Step 3: Upgrade from Debian Wheezy to Jessie
+
+There are the [Debian release notes on how to upgrade from wheezy to jessie](https://www.debian.org/releases/stable/amd64/release-notes/ch-upgrading.html). Here are the steps that worked for us, but please keep in mind that there is no bullet-proof method that will work in every situation. 
+
+**USE AT YOUR OWN RISK.**
+
+For each one of your nodes, login to it and do the following process:
+
+    # keep a log of the progress:
+    screen
+    script -t 2>~/leap_upgrade-jessiestep.time -a ~/upgrade-jessiestep.script
+
+    # ensure you have a good wheezy install:
+    export DEBIAN_FRONTEND=noninteractive
+    apt-get autoremove --yes
+    apt-get update
+    apt-get -y -o DPkg::Options::=--force-confold dist-upgrade
+
+    # if either of these return anything, you will need to resolve them before continuing:
+    dpkg --audit
+    dpkg --get-selections | grep 'hold$'
+
+    # switch sources to jessie
+    sed -i 's/wheezy/jessie/g' /etc/apt/sources.list
+    rm /etc/apt/sources.list.d/*
+    echo "deb http://deb.leap.se/0.8 jessie main" > /etc/apt/sources.list.d/leap.list
+
+    # remove pinnings to wheezy
+    rm /etc/apt/preferences
+    rm /etc/apt/preferences.d/*
+
+    # get jessie package lists
+    apt-get update
+
+    # clean out old package files
+    apt-get clean
+
+    # test to see if you have enough space to upgrade, the following will alert
+    # you if you do not have enough space, it will not do the actual upgrade
+    apt-get -o APT::Get::Trivial-Only=true dist-upgrade
+
+    # do first stage upgrade
+    apt-get -y -o DPkg::Options::=--force-confold upgrade
+
+    # repeat the following until it makes no more changes:
+    apt-get -y -o DPkg::Options::=--force-confold dist-upgrade
+
+    # resolve any apt issues if there are some
+    apt-get -y -o DPkg::Options::=--force-confold -f install
+
+    # clean up extra packages
+    apt-get autoremove --yes
+
+    reboot
+
+
+Potential Jessie Upgrade Issues
+-------------------------------
+
+**W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-max**
+
+You can ignore these warnings, they will be resolved on upgrade.
+
+**E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?**
+
+If you get this error, run `apt-get update` and then re-run the command.
+
+**Unmet dependencies. Try using -f.**
+
+Sometimes you might get an error similar to this (although the package names may be different):
+
+    You might want to run 'apt-get -f install' to correct these.
+    The following packages have unmet dependencies:
+    lsof : Depends: libperl4-corelibs-perl but it is not installed or
+                 perl (< 5.12.3-7) but 5.20.2-3+deb8u4 is installed
+
+If this happens, run `apt-get -f install` to resolve it, and then re-do the previous upgrade command
+you did when this happened.
+
+**Failure restarting some services for OpenSSL upgrade**
+
+If you get this warning:
+
+    The following services could not be restarted for the OpenSSL library upgrade:
+      postfix
+    You will need to start these manually by running '/etc/init.d/<service> start'.
+
+Just ignore it, it should be fixed on reboot/deploy.
+
+### Step 4: Deploy LEAP Platform 0.8 to the Couch node
+
+You will need to deploy the 0.8 version of LEAP Platform to the couch node before continuing. 
+
+1. deploy to the couch node:
+
+    ```
+    workstation$ leap deploy <couchdb-node>
+    ```
+
+    If you used the iptables method of blocking access to couchdb, you need to run it again because the deploy just overwrote all the iptables rules:
+
+    ```
+    server# iptables -A INPUT -p tcp --dport 5984 --jump REJECT
+    ```
+
+### Step 5: Import Data into CouchDB
+
+<%= render :partial => 'docs/platform/common/bigcouch_migration_end.md' %>
+
+### Step 6: Deploy everything
+
+Now that you've upgraded all nodes to Jessie, and migrated to CouchDB, you are ready to deploy LEAP Platform 0.8 to the rest of the nodes:
+
+    workstation$ cd <provider directory>
+    workstation$ leap deploy
+
+### Step 7: Test and cleanup
+
+<%= render :partial => 'docs/platform/common/bigcouch_migration_finish.md' %>