CI: Moving CI dependencies to "ci/deps"
- [X] refs #23115
- [ ] tests added / passed
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

@jreback you were +0 on this, do you want to take a look? Also @TomAugspurger and @jbrockmendel 
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=h1) Report
> Merging [#23526](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/c6366f5c15acee213bad0d9f7a15ad69d4445a64?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/23526/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #23526      +/-   ##
==========================================
- Coverage   92.25%   92.25%   -0.01%     
==========================================
  Files         161      161              
  Lines       51169    51186      +17     
==========================================
+ Hits        47207    47222      +15     
- Misses       3962     3964       +2
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.64% <ø> (-0.01%)` | :arrow_down: |
| #single | `42.27% <ø> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/series.py](https://codecov.io/gh/pandas-dev/pandas/pull/23526/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvc2VyaWVzLnB5) | `93.7% <0%> (-0.18%)` | :arrow_down: |
| [pandas/core/generic.py](https://codecov.io/gh/pandas-dev/pandas/pull/23526/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ2VuZXJpYy5weQ==) | `96.81% <0%> (ø)` | :arrow_up: |
| [pandas/io/parsers.py](https://codecov.io/gh/pandas-dev/pandas/pull/23526/diff?src=pr&el=tree#diff-cGFuZGFzL2lvL3BhcnNlcnMucHk=) | `95.62% <0%> (+0.01%)` | :arrow_up: |
| [pandas/core/groupby/groupby.py](https://codecov.io/gh/pandas-dev/pandas/pull/23526/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ3JvdXBieS9ncm91cGJ5LnB5) | `96.51% <0%> (+0.02%)` | :arrow_up: |
| [pandas/core/groupby/generic.py](https://codecov.io/gh/pandas-dev/pandas/pull/23526/diff?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvZ3JvdXBieS9nZW5lcmljLnB5) | `87.07% <0%> (+0.03%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=footer). Last update [c6366f5...9fd3e43](https://codecov.io/gh/pandas-dev/pandas/pull/23526?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 looks good. need a clean run though, not sure what is failing. Need to update `ci/incremental/setup_conda_environment.cmd` for the new location.

I wonder if that script can be removed... but OK with just changing the path. I didn't see that one, thanks for pointing out, I couldn't find the error. Changed now. I think all green @datapythonista are the failures at https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=2559&view=results what we have on master right now? I haven't seen those errors before. But I think this is the last build of master, and they are there too: https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=2565&view=results k. feel free to merge this then. I'll open an issue and investigate.

On Tue, Nov 6, 2018 at 1:44 PM Marc Garcia <notifications@github.com> wrote:

> I haven't seen those errors before. But I think this is the last build of
> master, and they are there too:
> https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=2565&view=results
>
> —
> You are receiving this because you were mentioned.
> Reply to this email directly, view it on GitHub
> <https://github.com/pandas-dev/pandas/pull/23526#issuecomment-436383555>,
> or mute the thread
> <https://github.com/notifications/unsubscribe-auth/ABQHIvxVPb-o_iWAm_dlUMa0stCSllCWks5usealgaJpZM4YP6WN>
> .
>
 I think that https://github.com/pandas-dev/pandas/pull/23454 is fixing this.

On Tue, Nov 6, 2018 at 1:45 PM Tom Augspurger <tom.augspurger88@gmail.com>
wrote:

> k. feel free to merge this then. I'll open an issue and investigate.
>
> On Tue, Nov 6, 2018 at 1:44 PM Marc Garcia <notifications@github.com>
> wrote:
>
>> I haven't seen those errors before. But I think this is the last build of
>> master, and they are there too:
>> https://dev.azure.com/pandas-dev/pandas/_build/results?buildId=2565&view=results
>>
>> —
>> You are receiving this because you were mentioned.
>> Reply to this email directly, view it on GitHub
>> <https://github.com/pandas-dev/pandas/pull/23526#issuecomment-436383555>,
>> or mute the thread
>> <https://github.com/notifications/unsubscribe-auth/ABQHIvxVPb-o_iWAm_dlUMa0stCSllCWks5usealgaJpZM4YP6WN>
>> .
>>
>
 Yes they are on master - this PR here fixes them and also address the issue that build status does not go red when tests fail - #23454