build: Update pyrsistent to fix Dockerfile.deploy (PROJQUAY-3125)

[syed]

Dockerfile.deply is used for quay.io

[flavianmissi]

/cherry-pick redhat-3.6

[openshift-cherrypick-robot]

@flavianmissi: #1079 failed to apply on top of branch "redhat-3.6":

Applying: build: Update pyrsistent to fix Dockerfile.deploy (PROJQUAY-3125)
Using index info to reconstruct a base tree...
M	Dockerfile
A	Dockerfile.deploy
M	requirements.txt
Falling back to patching base and 3-way merge...
Auto-merging requirements.txt
CONFLICT (modify/delete): Dockerfile.deploy deleted in HEAD and modified in build: Update pyrsistent to fix Dockerfile.deploy (PROJQUAY-3125). Version build: Update pyrsistent to fix Dockerfile.deploy (PROJQUAY-3125) of Dockerfile.deploy left in tree.
Auto-merging Dockerfile
CONFLICT (content): Merge conflict in Dockerfile
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 build: Update pyrsistent to fix Dockerfile.deploy (PROJQUAY-3125)
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

In response to this:

/cherry-pick redhat-3.6

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