feat(validation): adding validation for ZFSPV CR parameters (#66)

Validating few parameters for the ZFSVolume custom resource

- compression can be "on", "off", "lzjb", "gzip", "gzip-[1-9]", "zle" and "lz4"
- encryption can be "on", "off", "aes-128-ccm", "aes-192-ccm", "aes-256-ccm", "aes-128-gcm", "aes-192-gcm", and "aes-256-gcm"
- dedup can be "on" and "off"
- poolname can be string
- ownernodeid can be string
- thinprovision can be "yes" and "no"
- volumetype can be "DATASET" and "ZVOL"

Also added required fields needed to create ZFSVolume CR
- ownerNodeID
- poolname
- volumeType
- capacity


Signed-off-by: Pawan <pawan@mayadata.io>

Makefile

@@ -61,12 +61,16 @@ test: format
 # Bootstrap downloads tools required
 # during build
 .PHONY: bootstrap
-bootstrap:
+bootstrap: controller-gen
 	@for tool in  $(EXTERNAL_TOOLS) ; do \
 		echo "+ Installing $$tool" ; \
 		go get -u $$tool; \
 	done
 
+.PHONY: controller-gen
+controller-gen:
+	TMP_DIR=$(shell mktemp -d) && cd $$TMP_DIR && go mod init tmp && go get sigs.k8s.io/controller-tools/cmd/controller-gen@v0.2.8 && rm -rf $$TMP_DIR;
+
 # SRC_PKG is the path of code files
 SRC_PKG := github.com/openebs/zfs-localpv/pkg
 
@@ -136,7 +140,7 @@ informer:
 
 manifests:
 	@echo "+ Generating zfs localPV crds"
-	$(PWD)/buildscripts/update-crd.sh
+	$(PWD)/buildscripts/generate-manifests.sh
 
 .PHONY: zfs-driver
 zfs-driver: format