Fix null values in state forcing replace

[bendbennett]

There are several comments on Upgrade v2.2.1 -> v3.4.0 forces replacement which indicate that a forced recreate occurs when there are null values in the state for certain attributes:

• Upgrade v2.2.1 -> v3.4.0 forces replacement #302 (comment)
• Upgrade v2.2.1 -> v3.4.0 forces replacement #302 (comment)
• Upgrade v2.2.1 -> v3.4.0 forces replacement #302 (comment)

The attributes in question appear to be:

"lower": null
"min_lower": null
"min_numeric": null
"min_special": null
"min_upper": null
"number": null
"numeric": null
"special": null
"upper": null

This PR attempts to address this issue by using a state upgrader to set each of these attributes to be non-null and to have the appropriate default value (e.g., 0 for lower, true for min_lower).

[bendbennett]

Closed as superseded by #313

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