check for re-bootstrapping

[tedder]

Some version changes are incompatible with old bootstrap attempts.

I can think of a couple ways to handle this, but I just wanted to lodge it as a concern.

Here's an example, this is the error from an old bootstrap and a new attempt to call python (but it's installed to a different location).

fatal: [10.10.10.10]: FAILED! => {"changed": false, "failed": true, "module_stderr": "Shared connection to 10.10.10.10 closed.\r\n", "module_stdout": "/home/core/pypy/bin/pypy: /lib64/libssl.so.1.0.0: no version information available (required by /home/core/pypy/bin/pypy)\r\n/home/core/pypy/bin/pypy: /lib64/libcrypto.so.1.0.0: no version information available (required by /home/core/pypy/bin/pypy)\r\nTraceback (most recent call last):\r\n  File \"app_main.py\", line 75, in run_toplevel\r\n  File \"/home/core/.ansible/tmp/ansible-tmp-1479847680.99-162471543187092/pip.py\", line 130, in <module>\r\n    exitcode = invoke_module(module, zipped_mod, ANSIBALLZ_PARAMS)\r\n  File \"/home/core/.ansible/tmp/ansible-tmp-1479847680.99-162471543187092/pip.py\", line 37, in invoke_module\r\n    p = subprocess.Popen(['PATH=/home/core/bin:$PATH', 'python', module], env=os.environ, shell=False, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)\r\n  File \"/home/core/pypy/lib-python/2.7/subprocess.py\", line 710, in __init__\r\n    errread, errwrite)\r\n  File \"/home/core/pypy/lib-python/2.7/subprocess.py\", line 1331, in _execute_child\r\n    raise child_exception\r\nOSError: [Errno 2] No such file or directory\r\n", "msg": "MODULE FAILURE"}

[Constantin07]

I'm getting the same error. Is there an workaround for this ?

TASK [defunctzombie.coreos-bootstrap : Copy get-pip.py] *************************************************************************************************************
fatal: [coreos1]: FAILED! => {"failed": true, "msg": "Failed to get information on remote file (/home/core/get-pip.py): Shared connection to coreos1 closed.\r\n"}