Create prepare_remote_test.py

[gabor-boros]

Description

In order to run remote tests on DO nodes, we need to set up a droplet, install rebirthdb, run tests (integration, performance or regression) and clean up after the tests, to not waste resources.

Workflow

1. Create an "in-memory" ssh key with paramiko
2. Create an SSH key on DO
3. Create droplet
4. Add debian package and install rebirthdb
5. Create a default configuration file
6. Start/Restart rebirthdb
7. Run integration tests
8. Remove SSH key and droplet

Example output

[2018-08-06T09:32:18.006548]    generating ssh key
[2018-08-06T09:32:18.122468]    create ssh key on DigitalOcean
[2018-08-06T09:32:18.762295]    creating droplet
[2018-08-06T09:32:20.327846]    waiting for droplet to be ready
[2018-08-06T09:32:47.484535]    connecting to droplet
[2018-08-06T09:33:10.783060]    getting rebirthdb
[2018-08-06T09:33:10.783129]    executing source /etc/lsb-release && echo "deb https://dl.bintray.com/floydkots/apt $DISTRIB_CODENAME main" | tee /etc/apt/sources.list.d/rebirthdb.list
[2018-08-06T09:33:11.358472]    executing wget -qO- https://dl.bintray.com/floydkots/keys/pubkey.gpg | apt-key add -
[2018-08-06T09:33:12.392463]    installing rebirthdb
[2018-08-06T09:33:12.392495]    executing apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y rebirthdb
[2018-08-06T09:33:29.986438]    executing echo "bind=all" > /etc/rebirthdb/instances.d/default.conf
[2018-08-06T09:33:30.602472]    restarting rebirthdb
[2018-08-06T09:33:30.602521]    executing /etc/init.d/rebirthdb restart
[2018-08-06T09:33:31.261257]    executing script
======================================================================== test session starts ========================================================================
platform darwin -- Python 2.7.10, pytest-3.7.1, py-1.5.4, pluggy-0.7.1
rootdir: /Users/buco/python/github.com/RebirthDB/rebirthdb-python, inifile: setup.cfg
plugins: xdist-1.22.5, forked-0.2, cov-2.5.1
collected 6 items / 5 deselected

tests/test_repl.py .                                                                                                                                          [100%]

============================================================== 1 passed, 5 deselected in 1.59 seconds ===============================================================
[2018-08-06T09:33:33.259663]    destroying droplet
[2018-08-06T09:33:33.962999]    removing ssh key

Related PR

https://github.com/RebirthDB/rebirthdb-python/pull/19

[atris]

@floydkots Please take a look

[coveralls]

Pull Request Test Coverage Report for Build 65

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 0.0%

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Totals
Change from base Build 58:	0.0%
Covered Lines:	0
Relevant Lines:	0

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💛 - Coveralls